#37CB6F
Closest named color: Seaweed (#18D17B). oklch(74.5% 0.179 151.4), rgb(55, 203, 111).
Aa
Black text reads best on this color (9.93:1).
About this color
#37CB6F is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.179 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.018 away. Black text reads best on it, at 9.93:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #37CB6F |
| RGB | rgb(55, 203, 111) |
| HSL | hsl(143, 59%, 51%) |
| OKLCH | oklch(74.5% 0.179 151.4) |
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 #37CB6F | 2.11:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #37CB6F | 9.93:1 | AAA | Lc 63.0 | Content text, not long reading |
| #37CB6F text on white | 2.11:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #37CB6F text on black | 9.93:1 | AAA | Lc -61.3 | 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
#EFF9F0
oklch(97.2% 0.016 148.4)
-
Step 100
100
#DBF0DF
oklch(93.5% 0.032 151.2)
-
Step 200
200
#BCE6C5
oklch(88.6% 0.063 151.4)
-
Step 300
300
#88D69C
oklch(81% 0.113 151.4)
-
Step 400
400 (this color)
#37CB6F
oklch(74.5% 0.179 151.4)
-
Step 500
500
#00A551
oklch(63.2% 0.169 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
Step 700
700
#007537
oklch(49.2% 0.132 151.1)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#37CB6F 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) | #CCBA68 | 0.151 |
| Deuteranopia (no green cones) | #BAAD75 | 0.149 |
| Tritanopia (no blue cones) | #00C8B5 | 0.096 |
| Achromatopsia (no color) | #B2B2B2 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CB6F
#37CB6F
oklch(74.5% 0.179 151.4)
- #EB7DDF
#EB7DDF
oklch(74.5% 0.179 331.4)
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 #37CB6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.018
- Algae Green #21C36F ΔE 0.026
- Dark Mint #48C072 ΔE 0.033
- Dark Mint Green #20C073 ΔE 0.036
- Greenblue #23C48B ΔE 0.046
- Soft Green #6FC276 ΔE 0.047
- Shamrock Green #02C14D ΔE 0.047
- Apple #6ECB3C ΔE 0.052
Use #37CB6F 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.