#21591A
Closest named color: Deep Green (#02590F). oklch(41.2% 0.111 141.5), rgb(33, 89, 26).
Aa
White text reads best on this color (8.37:1).
About this color
#21591A is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.111 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Deep Green (#02590F), ΔE 0.020 away. White text reads best on it, at 8.37:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Deep Green (#02590F) |
| Black text | 2.50:1 |
| White text | 8.37:1 |
Values
| HEX | #21591A |
| RGB | rgb(33, 89, 26) |
| HSL | hsl(113, 55%, 23%) |
| OKLCH | oklch(41.2% 0.111 141.5) |
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 #21591A | 8.37:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #21591A | 2.50:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #21591A text on white | 8.37:1 | AAA | Lc 88.6 | Fine for body text |
| #21591A text on black | 2.50:1 | Fails | Lc -13.6 | Not readable |
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 800.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CCE0CA
oklch(88.6% 0.037 142.7)
-
Step 300
300
#AACCA5
oklch(81% 0.065 141.5)
-
Step 400
400
#7BB174
oklch(70.7% 0.104 141.7)
-
Step 500
500
#579D4E
oklch(63.1% 0.133 141.5)
-
Step 600
600
#3A8730
oklch(55.5% 0.144 141.4)
-
Step 700
700
#2B7223
oklch(48.9% 0.134 141.7)
-
Step 800
800 (this color)
#21591A
oklch(41.2% 0.111 141.5)
-
Step 900
900
#244D1F
oklch(37.8% 0.087 141.6)
-
Step 950
950
#162D13
oklch(27% 0.055 141.5)
#21591A 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) | #5B5112 | 0.077 |
| Deuteranopia (no green cones) | #544C20 | 0.077 |
| Tritanopia (no blue cones) | #19564C | 0.073 |
| Achromatopsia (no color) | #4E4E4E | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21591A
#21591A
oklch(41.2% 0.111 141.5)
- #66336F
#66336F
oklch(41.2% 0.112 321.4)
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 #21591A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Green #02590F ΔE 0.020
- Navy Green #35530A ΔE 0.024
- Forest #0B5509 ΔE 0.024
- Pine #2B5D34 ΔE 0.034
- Spruce #0A5F38 ΔE 0.034
- Dark Green #006400 ΔE 0.044
- Army Green #4B5D16 ΔE 0.052
- Bottle Green #044A05 ΔE 0.056
Use #21591A 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.