#37CA7D
Closest named color: Seaweed (#18D17B). oklch(74.5% 0.165 155.2), rgb(55, 202, 125).
Aa
Black text reads best on this color (9.90:1).
About this color
#37CA7D is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.165 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.022 away. Black text reads best on it, at 9.90:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 9.90:1 |
| White text | 2.11:1 |
Values
| HEX | #37CA7D |
| RGB | rgb(55, 202, 125) |
| HSL | hsl(149, 58%, 50%) |
| OKLCH | oklch(74.5% 0.165 155.2) |
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 #37CA7D | 2.11:1 | Fails | Lc -45.7 | Large or bold text, headings |
| Black text on #37CA7D | 9.90:1 | AAA | Lc 62.8 | Content text, not long reading |
| #37CA7D text on white | 2.11:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #37CA7D text on black | 9.90:1 | AAA | Lc -61.2 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DBF0E1
oklch(93.6% 0.03 154.7)
-
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)
#37CA7D
oklch(74.5% 0.165 155.2)
-
Step 500
500
#00A45E
oklch(63.1% 0.156 155.1)
-
Step 600
600
#008A4E
oklch(55.6% 0.137 155)
-
Step 700
700
#007441
oklch(49.1% 0.121 155.2)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#37CA7D 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) | #C9BA78 | 0.147 |
| Deuteranopia (no green cones) | #B7AD82 | 0.144 |
| Tritanopia (no blue cones) | #00C8B7 | 0.081 |
| Achromatopsia (no color) | #B2B2B2 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CA7D
#37CA7D
oklch(74.5% 0.165 155.2)
- #EB80D5
#EB80D5
oklch(74.5% 0.166 335.3)
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 #37CA7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.022
- Algae Green #21C36F ΔE 0.027
- Dark Mint #48C072 ΔE 0.027
- Greenblue #23C48B ΔE 0.030
- Dark Mint Green #20C073 ΔE 0.032
- Soft Green #6FC276 ΔE 0.039
- Green Blue #01C08D ΔE 0.043
- Emerald #06D6A0 ΔE 0.046
Use #37CA7D 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.