#21775E
Closest named color: Dark Aquamarine (#017371). oklch(51.2% 0.09 169.4), rgb(33, 119, 94).
Aa
White text reads best on this color (5.43:1).
About this color
#21775E is a medium-dark, moderately saturated green. In OKLCH its lightness is 51%, its chroma 0.090 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.037 away. White text reads best on it, at 5.43:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #21775E |
| RGB | rgb(33, 119, 94) |
| HSL | hsl(163, 57%, 30%) |
| OKLCH | oklch(51.2% 0.09 169.4) |
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 #21775E | 5.43:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #21775E | 3.86:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #21775E text on white | 5.43:1 | AA | Lc 76.8 | Fine for body text |
| #21775E text on black | 3.86:1 | AA large text | Lc -25.0 | 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 700.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD6
oklch(88.5% 0.026 168.2)
-
Step 300
300
#A6CABC
oklch(80.9% 0.043 169.6)
-
Step 400
400
#74AF99
oklch(70.7% 0.07 168.9)
-
Step 500
500
#4B9B80
oklch(63.1% 0.09 168.9)
-
Step 600
600
#28856A
oklch(55.5% 0.096 169.6)
-
Step 700
700 (this color)
#21775E
oklch(51.2% 0.09 169.4)
-
Step 800
800
#185C48
oklch(42.7% 0.075 169.2)
-
Step 900
900
#1C4B3C
oklch(37.5% 0.058 169.3)
-
Step 950
950
#122C23
oklch(26.9% 0.037 168.7)
#21775E 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) | #746F5D | 0.092 |
| Deuteranopia (no green cones) | #686660 | 0.088 |
| Tritanopia (no blue cones) | #007870 | 0.027 |
| Achromatopsia (no color) | #6A6A6A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21775E
#21775E
oklch(51.2% 0.09 169.4)
- #8D506E
#8D506E
oklch(51.2% 0.09 349.9)
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 #21775E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.037
- Bluegreen #017A79 ΔE 0.040
- Deep Turquoise #017374 ΔE 0.041
- Teal #008080 ΔE 0.051
- Deep Aqua #08787F ΔE 0.051
- Dark Aqua #05696B ΔE 0.057
- Jungle Green #048243 ΔE 0.060
- Dark Green Blue #1F6357 ΔE 0.063
Use #21775E 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.