#37CA79
Closest named color: Seaweed (#18D17B). oklch(74.4% 0.169 154.1), rgb(55, 202, 121).
Aa
Black text reads best on this color (9.88:1).
About this color
#37CA79 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.169 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.020 away. Black text reads best on it, at 9.88:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 9.88:1 |
| White text | 2.12:1 |
Values
| HEX | #37CA79 |
| RGB | rgb(55, 202, 121) |
| HSL | hsl(147, 58%, 50%) |
| OKLCH | oklch(74.4% 0.169 154.1) |
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 #37CA79 | 2.12:1 | Fails | Lc -45.8 | Large or bold text, headings |
| Black text on #37CA79 | 9.88:1 | AAA | Lc 62.8 | Content text, not long reading |
| #37CA79 text on white | 2.12:1 | Fails | Lc 41.2 | Non-text elements, placeholder text |
| #37CA79 text on black | 9.88:1 | AAA | Lc -61.1 | 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
#BCE5C8
oklch(88.5% 0.058 154.3)
-
Step 300
300
#88D5A2
oklch(80.9% 0.105 154.4)
-
Step 400
400 (this color)
#37CA79
oklch(74.4% 0.169 154.1)
-
Step 500
500
#00A45B
oklch(63.1% 0.158 154.2)
-
Step 600
600
#008A4B
oklch(55.6% 0.14 154)
-
Step 700
700
#00743E
oklch(49% 0.124 153.9)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#37CA79 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) | #CAB973 | 0.149 |
| Deuteranopia (no green cones) | #B8AD7E | 0.145 |
| Tritanopia (no blue cones) | #00C8B6 | 0.084 |
| Achromatopsia (no color) | #B2B2B2 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CA79
#37CA79
oklch(74.4% 0.169 154.1)
- #EA7FD7
#EA7FD7
oklch(74.3% 0.169 334.1)
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 #37CA79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.020
- Algae Green #21C36F ΔE 0.024
- Dark Mint #48C072 ΔE 0.027
- Dark Mint Green #20C073 ΔE 0.031
- Greenblue #23C48B ΔE 0.034
- Soft Green #6FC276 ΔE 0.040
- Green Blue #01C08D ΔE 0.047
- Emerald #06D6A0 ΔE 0.050
Use #37CA79 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.