#37C974
Closest named color: Algae Green (#21C36F). oklch(74% 0.172 152.9), rgb(55, 201, 116).
Aa
Black text reads best on this color (9.76:1).
About this color
#37C974 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.172 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.021 away. Black text reads best on it, at 9.76:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.76:1 |
| White text | 2.14:1 |
Values
| HEX | #37C974 |
| RGB | rgb(55, 201, 116) |
| HSL | hsl(145, 57%, 50%) |
| OKLCH | oklch(74% 0.172 152.9) |
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 #37C974 | 2.14:1 | Fails | Lc -46.4 | Large or bold text, headings |
| Black text on #37C974 | 9.76:1 | AAA | Lc 62.2 | Content text, not long reading |
| #37C974 text on white | 2.14:1 | Fails | Lc 41.7 | Non-text elements, placeholder text |
| #37C974 text on black | 9.76:1 | AAA | Lc -60.5 | 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
#DBF0E0
oklch(93.5% 0.031 152.9)
-
Step 200
200
#BCE5C7
oklch(88.5% 0.059 153.3)
-
Step 300
300
#89D59F
oklch(80.9% 0.108 152.6)
-
Step 400
400 (this color)
#37C974
oklch(74% 0.172 152.9)
-
Step 500
500
#00A457
oklch(63% 0.162 153)
-
Step 600
600
#008A48
oklch(55.5% 0.143 153)
-
Step 700
700
#00743B
oklch(49% 0.127 152.7)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#37C974 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) | #C9B86E | 0.148 |
| Deuteranopia (no green cones) | #B8AC7A | 0.146 |
| Tritanopia (no blue cones) | #00C6B4 | 0.089 |
| Achromatopsia (no color) | #B1B1B1 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37C974
#37C974
oklch(74% 0.172 152.9)
- #E97DD9
#E97DD9
oklch(74% 0.173 332.9)
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 #37C974, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.021
- Seaweed #18D17B ΔE 0.022
- Dark Mint #48C072 ΔE 0.025
- Dark Mint Green #20C073 ΔE 0.029
- Greenblue #23C48B ΔE 0.037
- Soft Green #6FC276 ΔE 0.041
- Cool Green #33B864 ΔE 0.049
- Green Blue #01C08D ΔE 0.049
Use #37C974 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.