#37CA8B
Closest named color: Greenblue (#23C48B). oklch(74.8% 0.153 160), rgb(55, 202, 139).
Aa
Black text reads best on this color (9.98:1).
About this color
#37CA8B is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.153 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.020 away. Black text reads best on it, at 9.98:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.98:1 |
| White text | 2.10:1 |
Values
| HEX | #37CA8B |
| RGB | rgb(55, 202, 139) |
| HSL | hsl(154, 58%, 50%) |
| OKLCH | oklch(74.8% 0.153 160) |
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 #37CA8B | 2.10:1 | Fails | Lc -45.3 | Large or bold text, headings |
| Black text on #37CA8B | 9.98:1 | AAA | Lc 63.2 | Content text, not long reading |
| #37CA8B text on white | 2.10:1 | Fails | Lc 40.7 | Non-text elements, placeholder text |
| #37CA8B text on black | 9.98:1 | AAA | Lc -61.5 | Content text, not long reading |
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 400.
-
Step 50
50
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DBF0E4
oklch(93.6% 0.027 160.9)
-
Step 200
200
#BCE5CD
oklch(88.6% 0.054 159.4)
-
Step 300
300
#88D4AB
oklch(80.9% 0.096 159.7)
-
Step 400
400 (this color)
#37CA8B
oklch(74.8% 0.153 160)
-
Step 500
500
#00A36B
oklch(63.1% 0.143 160.1)
-
Step 600
600
#008959
oklch(55.6% 0.126 160)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#37CA8B 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) | #C8BB87 | 0.144 |
| Deuteranopia (no green cones) | #B5AD8F | 0.140 |
| Tritanopia (no blue cones) | #00C9B9 | 0.065 |
| Achromatopsia (no color) | #B3B3B3 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CA8B
#37CA8B
oklch(74.8% 0.153 160)
- #EC84CB
#EC84CB
oklch(74.8% 0.153 340.3)
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 #37CA8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.020
- Dark Mint #48C072 ΔE 0.034
- Seaweed #18D17B ΔE 0.035
- Green Blue #01C08D ΔE 0.035
- Emerald #06D6A0 ΔE 0.036
- Algae Green #21C36F ΔE 0.039
- Dark Mint Green #20C073 ΔE 0.040
- Soft Green #6FC276 ΔE 0.040
Use #37CA8B 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.