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Flat Smock Turquoise

#357ea0
Notes

Flat Smock Turquoise (#357EA0) is a true cyan with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (199°, 50%, 42%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#357ea0
RGB
rgb(53, 126, 160)
HSL
hsl(199, 50%, 42%)
HWB
hwb(199 21% 37%)
OKLCH
oklch(56.2% 0.089 231.6)
P3
color(display-p3 0.2856 0.4878 0.6145)
HSV
hsv(199, 67%, 63%)
LAB
lab(49.76% -11.61 -24.88)
LCH
lch(49.76% 27.45 244.99)
CMYK
cmyk(67%, 21%, 0%, 37%)

Etymology

Flat
adjective

Old Norse flatr, flat / level. As a color modifier, flat implies a clear-and-evenly-spread quality where the hue carries the matte-finish visual register of unmodulated single-plane surface. Sits at the crisp-and-balanced end of the grid, parallel to level and even in usage.

Smock
modifier

Old English smoc, loose-shift-or-shepherd's-smock. As a color modifier, smock implies a shepherd's-smock-and-artist's-smock-and-pleated quality, the visual register of English-shepherd's-smock-and-artist's-smock hand-shepherd's-smock-and-artist's-smock-and-pleated English-shepherd's-smock-and-artist's-smock-and-Sussex-Surrey-rural smock-and-shepherd's-smock surfaces under English-shepherd's-smock-and-artist's-smock-and-Sussex-Surrey-rural Sussex-Downs-and-Surrey-village shepherd-and-painter-light. Sits at the modifier-and-textile end of the grid, parallel to frock and tunic in usage.

Turquoise
noun

The hydrated copper-aluminum phosphate mined in Persia and the American Southwest for thousands of years — the firuze of Iran, the chalchihuitl of Mesoamerica, the heart of Pueblo and Navajo silverwork. The color refers to a fine Sleeping Beauty turquoise from Arizona: a saturated, slightly green-shifted blue with the slight matrix of host-rock veining. Brighter than persian, lighter than cerulean.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#357ea0
Original
#6d7ca2
Protanopia
#5e72a0
Deuteranopia
#008789
Tritanopia
#717171
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
4.52:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.64:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##357EA0
Display P3
Display P3
color(display-p3 0.2856 0.4878 0.6145)
P3 has subtle headroomOKLCH chroma 0.089

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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