#37AC63
Closest named color: Seaweed Green (#35AD6B). oklch(66.2% 0.15 152.1), rgb(55, 172, 99).
Aa
Black text reads best on this color (7.24:1).
About this color
#37AC63 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.150 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed Green (#35AD6B), ΔE 0.010 away. Black text reads best on it, at 7.24:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Seaweed Green (#35AD6B) |
| Black text | 7.24:1 |
| White text | 2.89:1 |
Values
| HEX | #37AC63 |
| RGB | rgb(55, 172, 99) |
| HSL | hsl(143, 52%, 45%) |
| OKLCH | oklch(66.2% 0.15 152.1) |
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 #37AC63 | 2.89:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #37AC63 | 7.24:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #37AC63 text on white | 2.89:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #37AC63 text on black | 7.24:1 | AAA | Lc -46.9 | 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 500.
-
Step 50
50
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE3
oklch(93.6% 0.021 152.2)
-
Step 200
200
#C6E1CC
oklch(88.4% 0.04 152.1)
-
Step 300
300
#9ECFAA
oklch(81% 0.073 152.1)
-
Step 400
400
#63B57C
oklch(70.6% 0.116 152.3)
-
Step 500
500 (this color)
#37AC63
oklch(66.2% 0.15 152.1)
-
Step 600
600
#008A45
oklch(55.5% 0.146 152)
-
Step 700
700
#007439
oklch(49% 0.129 152)
-
Step 800
800
#00602E
oklch(42.8% 0.113 152)
-
Step 900
900
#025026
oklch(37.8% 0.098 152.1)
-
Step 950
950
#082F17
oklch(27.1% 0.062 152.3)
#37AC63 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) | #AC9E5E | 0.127 |
| Deuteranopia (no green cones) | #9E9468 | 0.125 |
| Tritanopia (no blue cones) | #00AA9A | 0.078 |
| Achromatopsia (no color) | #989898 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AC63
#37AC63
oklch(66.2% 0.15 152.1)
- #C76DBB
#C76DBB
oklch(66.3% 0.15 332.2)
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 #37AC63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed Green #35AD6B ΔE 0.010
- Jade Green #2BAF6A ΔE 0.010
- Algae #54AC68 ΔE 0.022
- Medium Sea Green #3CB371 ΔE 0.024
- Dark Seafoam Green #3EAF76 ΔE 0.025
- Dark Pastel Green #56AE57 ΔE 0.025
- Bluey Green #2BB179 ΔE 0.027
- Green Teal #0CB577 ΔE 0.029
Use #37AC63 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.