#37BC61
Closest named color: Cool Green (#33B864). oklch(70.3% 0.173 149.6), rgb(55, 188, 97).
Aa
Black text reads best on this color (8.52:1).
About this color
#37BC61 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.173 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.014 away. Black text reads best on it, at 8.52:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.52:1 |
| White text | 2.46:1 |
Values
| HEX | #37BC61 |
| RGB | rgb(55, 188, 97) |
| HSL | hsl(139, 55%, 48%) |
| OKLCH | oklch(70.3% 0.173 149.6) |
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 #37BC61 | 2.46:1 | Fails | Lc -53.0 | Large or bold text, headings |
| Black text on #37BC61 | 8.52:1 | AAA | Lc 56.0 | Large or bold text, headings |
| #37BC61 text on white | 2.46:1 | Fails | Lc 48.0 | Large or bold text, headings |
| #37BC61 text on black | 8.52:1 | AAA | Lc -54.0 | Large or bold text, headings |
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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DCF0DF
oklch(93.6% 0.031 149.8)
-
Step 200
200
#BEE5C4
oklch(88.5% 0.061 149.4)
-
Step 300
300
#8DD49B
oklch(80.8% 0.107 149.7)
-
Step 400
400 (this color)
#37BC61
oklch(70.3% 0.173 149.6)
-
Step 500
500
#00A54A
oklch(63.1% 0.175 149.7)
-
Step 600
600
#008B3D
oklch(55.6% 0.154 149.7)
-
Step 700
700
#007532
oklch(49.1% 0.137 149.6)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#003010
oklch(27% 0.075 149.4)
#37BC61 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) | #BDAC5A | 0.141 |
| Deuteranopia (no green cones) | #ADA167 | 0.138 |
| Tritanopia (no blue cones) | #00B9A7 | 0.096 |
| Achromatopsia (no color) | #A5A5A5 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BC61
#37BC61
oklch(70.3% 0.173 149.6)
- #D973D2
#D973D2
oklch(70.3% 0.172 329.8)
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 #37BC61, closest first.
No curated palette has a color within ΔE 0.04 of #37BC61.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.014
- Dark Mint Green #20C073 ΔE 0.020
- Algae Green #21C36F ΔE 0.021
- Dark Mint #48C072 ΔE 0.025
- Shamrock Green #02C14D ΔE 0.033
- Leafy Green #51B73B ΔE 0.034
- Shamrock #01B44C ΔE 0.036
- Medium Sea Green #3CB371 ΔE 0.038
Use #37BC61 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.