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Frank Kihada

#63581b
Notes

Frank Kihada (#63581B) is a deep amber with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (51°, 57%, 25%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#63581b
RGB
rgb(99, 88, 27)
HSL
hsl(51, 57%, 25%)
HWB
hwb(51 11% 61%)
OKLCH
oklch(45.9% 0.081 98.9)
P3
color(display-p3 0.3810 0.3466 0.1481)
HSV
hsv(51, 73%, 39%)
LAB
lab(37.32% -3.34 35.50)
LCH
lch(37.32% 35.66 95.38)
CMYK
cmyk(0%, 11%, 73%, 61%)

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.

Kihada
noun

Phellodendron amurense, the Amur cork tree — and the bright yellow inner bark used as a Japanese textile dye and traditional medicine. Kihada-iro refers to the saturated yellow of kihada-dyed silk. The color refers to fresh kihada-bark powder: a saturated, slightly cool deep yellow with the matte finish of plant-derived pigment. Cooler than turmeric.

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.

#63581b
Original
#615613
Protanopia
#645a1e
Deuteranopia
#6b514c
Tritanopia
#565656
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
7.14:1
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
2.94:1

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
##63581B
Display P3
Display P3
color(display-p3 0.3810 0.3466 0.1481)
P3 has subtle headroomOKLCH chroma 0.081

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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