#37A577
Closest named color: Jade (#1FA774). oklch(64.8% 0.122 161.7), rgb(55, 165, 119).
Aa
Black text reads best on this color (6.81:1).
About this color
#37A577 is a medium-light, moderately saturated green. In OKLCH its lightness is 65%, its chroma 0.122 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.013 away. Black text reads best on it, at 6.81:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #37A577 |
| RGB | rgb(55, 165, 119) |
| HSL | hsl(155, 50%, 43%) |
| OKLCH | oklch(64.8% 0.122 161.7) |
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 #37A577 | 3.08:1 | AA large text | Lc -62.8 | Content text, not long reading |
| Black text on #37A577 | 6.81:1 | AA | Lc 46.6 | Large or bold text, headings |
| #37A577 text on white | 3.08:1 | AA large text | Lc 57.4 | Large or bold text, headings |
| #37A577 text on black | 6.81:1 | AA | Lc -44.3 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E0EEE6
oklch(93.6% 0.018 161.1)
-
Step 200
200
#C7E0D2
oklch(88.4% 0.033 161.2)
-
Step 300
300
#9FCDB5
oklch(80.9% 0.059 162)
-
Step 400
400
#66B38E
oklch(70.6% 0.095 161.8)
-
Step 500
500 (this color)
#37A577
oklch(64.8% 0.122 161.7)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#084E34
oklch(37.6% 0.079 161.7)
-
Step 950
950
#0A2E1F
oklch(27.1% 0.05 162.1)
#37A577 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) | #A39974 | 0.117 |
| Deuteranopia (no green cones) | #948E7A | 0.114 |
| Tritanopia (no blue cones) | #00A599 | 0.050 |
| Achromatopsia (no color) | #939393 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A577
#37A577
oklch(64.8% 0.122 161.7)
- #C06FA3
#C06FA3
oklch(64.7% 0.121 342)
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 #37A577, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.013
- Dark Seafoam Green #3EAF76 ΔE 0.031
- Seaweed Green #35AD6B ΔE 0.033
- Ocean Green #3D9973 ΔE 0.034
- Bluey Green #2BB179 ΔE 0.035
- Algae #54AC68 ΔE 0.038
- Jade Green #2BAF6A ΔE 0.039
- Tea #65AB7C ΔE 0.044
Use #37A577 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.