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Frank Macaw

#255c1b
Notes

Frank Macaw (#255C1B) is a deep green 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 (111°, 55%, 23%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#255c1b
RGB
rgb(37, 92, 27)
HSL
hsl(111, 55%, 23%)
HWB
hwb(111 11% 64%)
OKLCH
oklch(42.3% 0.113 140.8)
P3
color(display-p3 0.2035 0.3560 0.1430)
HSV
hsv(111, 71%, 36%)
LAB
lab(34.24% -31.91 30.92)
LCH
lch(34.24% 44.44 135.91)
CMYK
cmyk(60%, 0%, 71%, 64%)

Etymology

Frank
adjective

From the Old French franc, free, sincere — used as a color modifier since the seventeenth century for hues that read as direct and unhedged. Frank red, frank brown: moderate-to-high saturation combined with optical directness. Sits at the crisp-bucket alongside direct and honest.

Macaw
noun

The genus Ara — large neotropical parrots — particularly A. militaris (military macaw) whose plumage is dominated by saturated green. The color refers to a military macaw's wing covers: a saturated, slightly cool deep green with the matte finish of structural-and-pigment feather color. Cooler than parakeet.

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.

#255c1b
Original
#5f5313
Protanopia
#574f21
Deuteranopia
#1e594f
Tritanopia
#4c4c4c
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).
AAAon White
8.00:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.63:1

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
##255C1B
Display P3
Display P3
color(display-p3 0.2035 0.3560 0.1430)
P3 has subtle headroomOKLCH chroma 0.113

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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