#37B09F
Closest named color: Light Sea Green (#20B2AA). oklch(68.7% 0.108 181.7), rgb(55, 176, 159).
Aa
Black text reads best on this color (7.87:1).
About this color
#37B09F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.108 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.016 away. Black text reads best on it, at 7.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.87:1 |
| White text | 2.66:1 |
Values
| HEX | #37B09F |
| RGB | rgb(55, 176, 159) |
| HSL | hsl(172, 52%, 45%) |
| OKLCH | oklch(68.7% 0.108 181.7) |
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 #37B09F | 2.66:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #37B09F | 7.87:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #37B09F text on white | 2.66:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #37B09F text on black | 7.87:1 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DDEEEB
oklch(93.6% 0.018 184.3)
-
Step 200
200
#BFE2DB
oklch(88.6% 0.038 182)
-
Step 300
300
#8FCFC3
oklch(80.8% 0.067 181.5)
-
Step 400
400 (this color)
#37B09F
oklch(68.7% 0.108 181.7)
-
Step 500
500
#009F8E
oklch(63% 0.113 181.8)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#37B09F 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) | #A8A69E | 0.114 |
| Deuteranopia (no green cones) | #9799A1 | 0.109 |
| Tritanopia (no blue cones) | #00B3AB | 0.019 |
| Achromatopsia (no color) | #9E9E9E | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B09F
#37B09F
oklch(68.7% 0.108 181.7)
- #D17D95
#D17D95
oklch(68.6% 0.108 1.9)
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 #37B09F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.016
- Greeny Blue #42B395 ΔE 0.020
- Topaz #13BBAF ΔE 0.032
- Tea #65AB7C ΔE 0.051
- Dull Teal #5F9E8F ΔE 0.052
- Turquoise Blue #06B1C4 ΔE 0.054
- Persian Green #2A9D8F ΔE 0.057
- Bluey Green #2BB179 ΔE 0.057
Use #37B09F 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.