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Tucked Loft Lazuli

#37939f
Notes

Tucked Loft Lazuli (#37939F) 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 (187°, 49%, 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#37939f
RGB
rgb(55, 147, 159)
HSL
hsl(187, 49%, 42%)
HWB
hwb(187 22% 38%)
OKLCH
oklch(61.4% 0.087 207.2)
P3
color(display-p3 0.3194 0.5688 0.6159)
HSV
hsv(187, 65%, 62%)
LAB
lab(56.27% -22.97 -14.33)
LCH
lch(56.27% 27.07 211.96)
CMYK
cmyk(65%, 8%, 0%, 38%)

Etymology

Tucked
adjective

Old English tūcian, to torment / pull — past-participle of tuck. As a color modifier, tucked implies a clear-and-fitted-and-arranged quality where the hue carries the visual register of carefully-tucked-and-neatly-fitted shirt-into-trouser dress-attire. Sits at the crisp-and-finished end of the grid, parallel to trim and pressed in usage.

Loft
modifier

Old Norse lopt, upper-floor / sky. As a color modifier, loft implies an upper-floor-and-rafter quality, the visual register of Tribeca-and-SoHo-Loft Industrial-Revolution converted-warehouse exposed-rafter-and-cast-iron-pillar artist-studio surfaces under Mid-Century-Modern New-York-City artist-loft light. Sits at the modifier-and-place end of the grid, parallel to atrium and barn in usage.

Lazuli
noun

Passerina amoena, the lazuli bunting — a North American songbird whose males display saturated deep-blue plumage with white wing bars and chestnut breasts. Named for the gemstone (lapis lazuli) the bird's plumage resembles. The color refers to a male lazuli bunting in breeding plumage: a saturated, slightly cool deep blue.

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.

#37939f
Original
#878da0
Protanopia
#77829f
Deuteranopia
#009997
Tritanopia
#808080
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).
AA Largeon White
3.60:1
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
5.84:1

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
##37939F
Display P3
Display P3
color(display-p3 0.3194 0.5688 0.6159)
P3 has subtle headroomOKLCH chroma 0.087

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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