#37CB7F
Closest named color: Seaweed (#18D17B). oklch(74.8% 0.165 155.7), rgb(55, 203, 127).
Aa
Black text reads best on this color (10.01:1).
About this color
#37CB7F is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.165 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.021 away. Black text reads best on it, at 10.01:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.01:1 |
| White text | 2.09:1 |
Values
| HEX | #37CB7F |
| RGB | rgb(55, 203, 127) |
| HSL | hsl(149, 59%, 51%) |
| OKLCH | oklch(74.8% 0.165 155.7) |
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 #37CB7F | 2.09:1 | Fails | Lc -45.2 | Large or bold text, headings |
| Black text on #37CB7F | 10.01:1 | AAA | Lc 63.3 | Content text, not long reading |
| #37CB7F text on white | 2.09:1 | Fails | Lc 40.6 | Non-text elements, placeholder text |
| #37CB7F text on black | 10.01:1 | AAA | Lc -61.7 | 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
#DBF0E2
oklch(93.6% 0.029 156.6)
-
Step 200
200
#BCE5C9
oklch(88.5% 0.057 155.2)
-
Step 300
300
#88D5A4
oklch(81% 0.104 155.4)
-
Step 400
400 (this color)
#37CB7F
oklch(74.8% 0.165 155.7)
-
Step 500
500
#00A460
oklch(63.2% 0.154 155.8)
-
Step 600
600
#008A50
oklch(55.7% 0.136 155.8)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F35
oklch(42.7% 0.104 155.6)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#003018
oklch(27.2% 0.067 155.5)
#37CB7F 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) | #CABB7A | 0.147 |
| Deuteranopia (no green cones) | #B8AE84 | 0.144 |
| Tritanopia (no blue cones) | #00C9B8 | 0.080 |
| Achromatopsia (no color) | #B3B3B3 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CB7F
#37CB7F
oklch(74.8% 0.165 155.7)
- #EC81D5
#EC81D5
oklch(74.8% 0.165 335.7)
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 #37CB7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.021
- Algae Green #21C36F ΔE 0.030
- Dark Mint #48C072 ΔE 0.030
- Greenblue #23C48B ΔE 0.030
- Dark Mint Green #20C073 ΔE 0.035
- Soft Green #6FC276 ΔE 0.039
- Emerald #06D6A0 ΔE 0.043
- Green Blue #01C08D ΔE 0.044
Use #37CB7F 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.