#81900B
Closest named color: Dark Yellow Green (#728F02). oklch(62% 0.14 117), rgb(129, 144, 11).
Aa
Black text reads best on this color (5.92:1).
About this color
#81900B is a medium-dark, vivid yellow. In OKLCH its lightness is 62%, its chroma 0.140 and its hue 117°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Yellow Green (#728F02), ΔE 0.022 away. Black text reads best on it, at 5.92:1.
| Hue family | Yellows |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #81900B |
| RGB | rgb(129, 144, 11) |
| HSL | hsl(67, 86%, 30%) |
| OKLCH | oklch(62% 0.14 117) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #81900B | 3.54:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #81900B | 5.92:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #81900B text on white | 3.54:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #81900B text on black | 5.92:1 | AA | Lc -38.8 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F5F6EF
oklch(97% 0.009 113.2)
-
Step 100
100
#E9ECDD
oklch(93.7% 0.02 116)
-
Step 200
200
#D7DDC1
oklch(88.5% 0.038 117)
-
Step 300
300
#BDC795
oklch(80.9% 0.068 117.1)
-
Step 400
400
#9CA956
oklch(70.6% 0.109 116.6)
-
Step 500
500 (this color)
#81900B
oklch(62% 0.14 117)
-
Step 600
600
#6F7C00
oklch(55.6% 0.128 116.8)
-
Step 700
700
#5D6800
oklch(49.1% 0.113 116.8)
-
Step 800
800
#4C5500
oklch(42.7% 0.098 116.6)
-
Step 900
900
#3F4700
oklch(37.7% 0.087 116.8)
-
Step 950
950
#252A03
oklch(27.1% 0.058 116.7)
#81900B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #9B8800 | 0.043 |
| Deuteranopia (no green cones) | #99891D | 0.043 |
| Tritanopia (no blue cones) | #8A877A | 0.122 |
| Achromatopsia (no color) | #888888 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81900B
#81900B
oklch(62% 0.14 117)
- #9072CF
#9072CF
oklch(62.1% 0.139 297.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #81900B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.022
- Olive Drab #6B8E23 ΔE 0.031
- Pea Soup #929901 ΔE 0.037
- Swamp Green #748500 ΔE 0.038
- Mossy Green #638B27 ΔE 0.044
- Olive #808000 ΔE 0.045
- Moss Green #658B38 ΔE 0.047
- Drab Green #749551 ΔE 0.048
Use #81900B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.