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Surveyed Yellowtail

#64600f
Notes

Surveyed Yellowtail (#64600F) is a deep yellow with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (57°, 74%, 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#64600f
RGB
rgb(100, 96, 15)
HSL
hsl(57, 74%, 23%)
HWB
hwb(57 6% 61%)
OKLCH
oklch(47.8% 0.096 106.5)
HSV
hsv(57, 85%, 39%)
LAB
lab(39.76% -8.12 42.56)
LCH
lch(39.76% 43.33 100.80)
CMYK
cmyk(0%, 4%, 85%, 61%)

Etymology

Surveyed
adjective

Old French surveer, to look upon — past-participle of survey. As a color modifier, surveyed implies a clear-and-measured-and-coordinated quality, the crisp color of Mason-Dixon-Line-and-Royal-Navy-Hydrographic scientific-and-cadastral land-and-sea surveying tradition. Sits at the crisp-and-mapped end of the grid, parallel to mapped and plotted in usage.

Yellowtail
noun

Seriola lalandi, the Pacific yellowtail amberjack — a sport fish prized in Japanese sushi cuisine as hamachi. The color refers to the yellow stripe along the lateral line: a saturated, slightly cool yellow with the matte finish of carotenoid-pigmented fish skin. Cooler than goldfinch.

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.

#64600f
Original
#695c00
Protanopia
#6b5f16
Deuteranopia
#6c5951
Tritanopia
#5b5b5b
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
6.52:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.22:1

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