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Straightforward Crystalline

#3a6e72
Notes

Straightforward Crystalline (#3A6E72) is a deep 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 (184°, 33%, 34%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3a6e72
RGB
rgb(58, 110, 114)
HSL
hsl(184, 33%, 34%)
HWB
hwb(184 23% 55%)
OKLCH
oklch(50.4% 0.056 202.0)
P3
color(display-p3 0.2773 0.4264 0.4433)
HSV
hsv(184, 49%, 45%)
LAB
lab(43.16% -16.18 -7.62)
LCH
lch(43.16% 17.89 205.23)
CMYK
cmyk(49%, 4%, 0%, 55%)

Etymology

Straightforward
adjective

English compound straight + forward — sharing root with German geradeaus. As a color modifier, straightforward implies a clear-and-direct-and-unencumbered quality where the hue carries the visual register of clear-aim-and-uncomplicated character. Sits at the crisp-and-honest end of the grid, parallel to candid and direct in usage.

Crystalline
noun

Water of exceptional clarity — particularly the crystalline mountain springs of Alpine and Andean rivers. Crystalline color refers to a fresh-emerged spring water in a marble basin at Plitvice Lakes: a soft, slightly cool pale blue with the optical clarity of mineral-saturated water.

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.

#3a6e72
Original
#676a72
Protanopia
#5e6372
Deuteranopia
#1b716f
Tritanopia
#636363
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
5.75:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.65:1

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
##3A6E72
Display P3
Display P3
color(display-p3 0.2773 0.4264 0.4433)
Inside sRGBOKLCH chroma 0.056

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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