#37B375
Closest named color: Medium Sea Green (#3CB371). oklch(68.4% 0.142 157), rgb(55, 179, 117).
Aa
Black text reads best on this color (7.86:1).
About this color
#37B375 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.142 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.005 away. Black text reads best on it, at 7.86:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.86:1 |
| White text | 2.66:1 |
Values
| HEX | #37B375 |
| RGB | rgb(55, 179, 117) |
| HSL | hsl(150, 53%, 46%) |
| OKLCH | oklch(68.4% 0.142 157) |
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 #37B375 | 2.66:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #37B375 | 7.86:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #37B375 text on white | 2.66:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #37B375 text on black | 7.86:1 | AAA | Lc -50.4 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DDEFE3
oklch(93.5% 0.025 156.7)
-
Step 200
200
#BFE4CC
oklch(88.6% 0.051 156.8)
-
Step 300
300
#90D2AA
oklch(80.8% 0.088 157.2)
-
Step 400
400 (this color)
#37B375
oklch(68.4% 0.142 157)
-
Step 500
500
#00A363
oklch(63% 0.15 157)
-
Step 600
600
#008A53
oklch(55.7% 0.133 157)
-
Step 700
700
#007445
oklch(49.2% 0.117 157)
-
Step 800
800
#005F37
oklch(42.7% 0.102 156.7)
-
Step 900
900
#004F2D
oklch(37.6% 0.09 156.8)
-
Step 950
950
#002F19
oklch(26.9% 0.064 157.1)
#37B375 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) | #B2A571 | 0.130 |
| Deuteranopia (no green cones) | #A29A79 | 0.126 |
| Tritanopia (no blue cones) | #00B2A3 | 0.066 |
| Achromatopsia (no color) | #9E9E9E | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B375
#37B375
oklch(68.4% 0.142 157)
- #D074B9
#D074B9
oklch(68.3% 0.143 337.1)
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 #37B375, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.005
- Dark Seafoam #1FB57A ΔE 0.010
- Bluey Green #2BB179 ΔE 0.011
- Dark Seafoam Green #3EAF76 ΔE 0.012
- Green Teal #0CB577 ΔE 0.013
- Jade Green #2BAF6A ΔE 0.019
- Seaweed Green #35AD6B ΔE 0.019
- Algae #54AC68 ΔE 0.024
Use #37B375 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.