#21874E
Closest named color: Sea Green (#2E8B57). oklch(55.2% 0.127 153.7), rgb(33, 135, 78).
Aa
Black text reads best on this color (4.64:1).
About this color
#21874E is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.127 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.018 away. Black text reads best on it, at 4.64:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #21874E |
| RGB | rgb(33, 135, 78) |
| HSL | hsl(146, 61%, 33%) |
| OKLCH | oklch(55.2% 0.127 153.7) |
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 #21874E | 4.52:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #21874E | 4.64:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #21874E text on white | 4.52:1 | AA | Lc 71.0 | Content text, not long reading |
| #21874E text on black | 4.64:1 | AA | Lc -30.7 | Non-text elements, placeholder text |
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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CAE0D0
oklch(88.6% 0.032 154.1)
-
Step 300
300
#A5CCB0
oklch(80.9% 0.057 153.8)
-
Step 400
400
#72B286
oklch(70.8% 0.092 153.5)
-
Step 500
500
#489E68
oklch(63.2% 0.117 153.8)
-
Step 600
600 (this color)
#21874E
oklch(55.2% 0.127 153.7)
-
Step 700
700
#127340
oklch(49% 0.117 153.9)
-
Step 800
800
#155E35
oklch(42.7% 0.097 153.7)
-
Step 900
900
#1A4D2E
oklch(37.7% 0.076 153.7)
-
Step 950
950
#112D1B
oklch(26.9% 0.048 153.5)
#21874E 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) | #877B4A | 0.111 |
| Deuteranopia (no green cones) | #7B7352 | 0.109 |
| Tritanopia (no blue cones) | #008579 | 0.065 |
| Achromatopsia (no color) | #767676 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21874E
#21874E
oklch(55.2% 0.127 153.7)
- #9D5391
#9D5391
oklch(55.2% 0.127 333.5)
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 #21874E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.018
- Jungle Green #048243 ΔE 0.023
- Viridian #1E9167 ΔE 0.039
- Fern Green #548D44 ΔE 0.047
- Light Forest Green #4F9153 ΔE 0.049
- Dark Sage #598556 ΔE 0.050
- Forest Green #228B22 ΔE 0.050
- Kelley Green #009337 ΔE 0.052
Use #21874E 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.