#37AB91
Closest named color: Greeny Blue (#42B395). oklch(67% 0.11 174.7), rgb(55, 171, 145).
Aa
Black text reads best on this color (7.39:1).
About this color
#37AB91 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.110 and its hue 175°. 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 7.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.39:1 |
| White text | 2.83:1 |
Values
| HEX | #37AB91 |
| RGB | rgb(55, 171, 145) |
| HSL | hsl(167, 51%, 44%) |
| OKLCH | oklch(67% 0.11 174.7) |
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 #37AB91 | 2.83:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #37AB91 | 7.39:1 | AAA | Lc 49.9 | Large or bold text, headings |
| #37AB91 text on white | 2.83:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #37AB91 text on black | 7.39:1 | AAA | Lc -47.7 | 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
#F0F8F5
oklch(97.2% 0.009 171.8)
-
Step 100
100
#DDEEE9
oklch(93.5% 0.019 176.4)
-
Step 200
200
#C0E2D7
oklch(88.5% 0.039 173.8)
-
Step 300
300
#91D0BE
oklch(81% 0.069 174.8)
-
Step 400
400 (this color)
#37AB91
oklch(67% 0.11 174.7)
-
Step 500
500
#00A085
oklch(63% 0.119 175)
-
Step 600
600
#00876F
oklch(55.6% 0.106 174.3)
-
Step 700
700
#00715D
oklch(49% 0.093 174.7)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#37AB91 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) | #A5A090 | 0.115 |
| Deuteranopia (no green cones) | #959493 | 0.110 |
| Tritanopia (no blue cones) | #00ADA3 | 0.027 |
| Achromatopsia (no color) | #999999 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AB91
#37AB91
oklch(67% 0.11 174.7)
- #CA7899
#CA7899
oklch(67.1% 0.11 354.8)
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 #37AB91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.025
- Light Sea Green #20B2AA ΔE 0.035
- Tea #65AB7C ΔE 0.041
- Persian Green #2A9D8F ΔE 0.043
- Dark Seafoam Green #3EAF76 ΔE 0.043
- Jade #1FA774 ΔE 0.044
- Bluey Green #2BB179 ΔE 0.044
- Dull Teal #5F9E8F ΔE 0.044
Use #37AB91 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.