#21812B
Closest named color: Tree Green (#2A7E19). oklch(53% 0.151 144.5), rgb(33, 129, 43).
Aa
White text reads best on this color (4.95:1).
About this color
#21812B is a medium-dark, vivid green. In OKLCH its lightness is 53%, its chroma 0.151 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.014 away. White text reads best on it, at 4.95:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.23:1 |
| White text | 4.95:1 |
Values
| HEX | #21812B |
| RGB | rgb(33, 129, 43) |
| HSL | hsl(126, 59%, 32%) |
| OKLCH | oklch(53% 0.151 144.5) |
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 #21812B | 4.95:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #21812B | 4.23:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #21812B text on white | 4.95:1 | AA | Lc 73.8 | Content text, not long reading |
| #21812B text on black | 4.23:1 | AA large text | Lc -27.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CBE0CA
oklch(88.5% 0.037 144)
-
Step 300
300
#A6CDA6
oklch(81% 0.068 144.9)
-
Step 400
400
#75B275
oklch(70.6% 0.108 144.3)
-
Step 500
500
#4D9F50
oklch(63.2% 0.14 144.4)
-
Step 600
600 (this color)
#21812B
oklch(53% 0.151 144.5)
-
Step 700
700
#1C7425
oklch(49.1% 0.141 144.4)
-
Step 800
800
#1B5F21
oklch(42.8% 0.116 144.5)
-
Step 900
900
#1D4E20
oklch(37.8% 0.091 144.6)
-
Step 950
950
#132E14
oklch(27.2% 0.057 144.5)
#21812B 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) | #837520 | 0.110 |
| Deuteranopia (no green cones) | #786D33 | 0.111 |
| Tritanopia (no blue cones) | #007D6F | 0.094 |
| Achromatopsia (no color) | #707070 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21812B
#21812B
oklch(53% 0.151 144.5)
- #95489C
#95489C
oklch(53.1% 0.15 324.2)
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 #21812B, closest first.
No curated palette has a color within ΔE 0.04 of #21812B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.014
- Dark Grass Green #388004 ΔE 0.022
- Jungle Green #048243 ΔE 0.025
- Green #008000 ΔE 0.029
- Forest Green #228B22 ΔE 0.033
- Emerald Green #028F1E ΔE 0.046
- Kelley Green #009337 ΔE 0.052
- Sea Green #2E8B57 ΔE 0.056
Use #21812B 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.