#37BC9C
Closest named color: Greeny Blue (#42B395). oklch(71.6% 0.123 172.9), rgb(55, 188, 156).
Aa
Black text reads best on this color (8.83:1).
About this color
#37BC9C is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.123 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.025 away. Black text reads best on it, at 8.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.83:1 |
| White text | 2.37:1 |
Values
| HEX | #37BC9C |
| RGB | rgb(55, 188, 156) |
| HSL | hsl(166, 55%, 48%) |
| OKLCH | oklch(71.6% 0.123 172.9) |
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 #37BC9C | 2.37:1 | Fails | Lc -51.4 | Large or bold text, headings |
| Black text on #37BC9C | 8.83:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #37BC9C text on white | 2.37:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #37BC9C text on black | 8.83:1 | AAA | Lc -55.6 | 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
#EFF8F5
oklch(97.2% 0.01 174.3)
-
Step 100
100
#DCEFE8
oklch(93.6% 0.022 171.8)
-
Step 200
200
#BEE3D6
oklch(88.6% 0.043 172)
-
Step 300
300
#8CD1BC
oklch(80.9% 0.076 173.2)
-
Step 400
400 (this color)
#37BC9C
oklch(71.6% 0.123 172.9)
-
Step 500
500
#00A182
oklch(63.2% 0.122 172.6)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#37BC9C 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) | #B6B09A | 0.127 |
| Deuteranopia (no green cones) | #A4A39E | 0.121 |
| Tritanopia (no blue cones) | #00BEB3 | 0.032 |
| Achromatopsia (no color) | #A8A8A8 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BC9C
#37BC9C
oklch(71.6% 0.123 172.9)
- #DE82AA
#DE82AA
oklch(71.7% 0.122 353.1)
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 #37BC9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.025
- Topaz #13BBAF ΔE 0.029
- Green Blue #01C08D ΔE 0.032
- Greenblue #23C48B ΔE 0.039
- Light Sea Green #20B2AA ΔE 0.042
- Dark Seafoam #1FB57A ΔE 0.050
- Bluey Green #2BB179 ΔE 0.052
- Dark Seafoam Green #3EAF76 ΔE 0.054
Use #37BC9C 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.