#21553C
Closest named color: Dark Blue Green (#005249). oklch(40.7% 0.07 159.9), rgb(33, 85, 60).
Aa
White text reads best on this color (8.64:1).
About this color
#21553C is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.070 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.030 away. White text reads best on it, at 8.64:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #21553C |
| RGB | rgb(33, 85, 60) |
| HSL | hsl(151, 44%, 23%) |
| OKLCH | oklch(40.7% 0.07 159.9) |
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 #21553C | 8.64:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #21553C | 2.42:1 | Fails | Lc 14.5 | Not readable |
| #21553C text on white | 8.64:1 | AAA | Lc 89.5 | Fine for body text |
| #21553C text on black | 2.42:1 | Fails | Lc -12.8 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CDDED4
oklch(88.5% 0.023 160.2)
-
Step 300
300
#ABC9B8
oklch(80.9% 0.04 160.6)
-
Step 400
400
#7DAE92
oklch(70.8% 0.066 159.1)
-
Step 500
500
#599978
oklch(63% 0.083 160.2)
-
Step 600
600
#3C8461
oklch(55.7% 0.091 160.1)
-
Step 700
700
#2E6F50
oklch(49% 0.084 160.2)
-
Step 800
800 (this color)
#21553C
oklch(40.7% 0.07 159.9)
-
Step 900
900
#254B37
oklch(37.8% 0.056 159.1)
-
Step 950
950
#162C21
oklch(27.1% 0.035 161)
#21553C 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) | #544F3B | 0.066 |
| Deuteranopia (no green cones) | #4D493E | 0.066 |
| Tritanopia (no blue cones) | #0D554E | 0.030 |
| Achromatopsia (no color) | #4C4C4C | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21553C
#21553C
oklch(40.7% 0.07 159.9)
- #633A55
#633A55
oklch(40.8% 0.07 340.9)
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 #21553C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.030
- Pine #2B5D34 ΔE 0.034
- Spruce #0A5F38 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Teal #014D4E ΔE 0.050
- Deep Teal #00555A ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.053
- Navy Green #35530A ΔE 0.054
Use #21553C 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.