#21735B
Closest named color: Dark Aquamarine (#017371). oklch(50% 0.087 169.4), rgb(33, 115, 91).
Aa
White text reads best on this color (5.72:1).
About this color
#21735B is a medium-dark, moderately saturated green. In OKLCH its lightness is 50%, its chroma 0.087 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 0.035 away. White text reads best on it, at 5.72:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #21735B |
| RGB | rgb(33, 115, 91) |
| HSL | hsl(162, 55%, 29%) |
| OKLCH | oklch(50% 0.087 169.4) |
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 #21735B | 5.72:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #21735B | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #21735B text on white | 5.72:1 | AA | Lc 78.3 | Fine for body text |
| #21735B text on black | 3.66:1 | AA large text | Lc -23.5 | 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
#CBDED6
oklch(88.4% 0.023 168.7)
-
Step 300
300
#A7CABC
oklch(80.9% 0.042 169)
-
Step 400
400
#76AF9A
oklch(70.8% 0.067 169.3)
-
Step 500
500
#4E9A81
oklch(63% 0.085 169.8)
-
Step 600
600
#2C856A
oklch(55.6% 0.094 169.1)
-
Step 700
700 (this color)
#21735B
oklch(50% 0.087 169.4)
-
Step 800
800
#1C5C48
oklch(42.8% 0.073 168.5)
-
Step 900
900
#1E4B3D
oklch(37.7% 0.056 170.2)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#21735B 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) | #706B5A | 0.089 |
| Deuteranopia (no green cones) | #65635D | 0.085 |
| Tritanopia (no blue cones) | #00746C | 0.026 |
| Achromatopsia (no color) | #666666 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21735B
#21735B
oklch(50% 0.087 169.4)
- #884E6B
#884E6B
oklch(50.1% 0.087 349.3)
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 #21735B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.035
- Deep Turquoise #017374 ΔE 0.040
- Bluegreen #017A79 ΔE 0.045
- Dark Aqua #05696B ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.051
- Deep Aqua #08787F ΔE 0.054
- Teal #008080 ΔE 0.059
- Dark Olive Green #556B2F ΔE 0.065
Use #21735B 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.