#37BFA1
Closest named color: Topaz (#13BBAF). oklch(72.5% 0.123 174.5), rgb(55, 191, 161).
Aa
Black text reads best on this color (9.12:1).
About this color
#37BFA1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.123 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.028 away. Black text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.12:1 |
| White text | 2.30:1 |
Values
| HEX | #37BFA1 |
| RGB | rgb(55, 191, 161) |
| HSL | hsl(167, 55%, 48%) |
| OKLCH | oklch(72.5% 0.123 174.5) |
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 #37BFA1 | 2.30:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #37BFA1 | 9.12:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #37BFA1 text on white | 2.30:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #37BFA1 text on black | 9.12:1 | AAA | Lc -57.1 | 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
#DCEFE9
oklch(93.6% 0.022 175)
-
Step 200
200
#BDE3D7
oklch(88.5% 0.043 174.2)
-
Step 300
300
#8BD1BD
oklch(80.8% 0.076 174.4)
-
Step 400
400 (this color)
#37BFA1
oklch(72.5% 0.123 174.5)
-
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)
#37BFA1 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) | #B8B3A0 | 0.128 |
| Deuteranopia (no green cones) | #A6A5A3 | 0.123 |
| Tritanopia (no blue cones) | #00C1B6 | 0.029 |
| Achromatopsia (no color) | #ABABAB | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BFA1
#37BFA1
oklch(72.5% 0.123 174.5)
- #E284AB
#E284AB
oklch(72.5% 0.124 354.3)
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 #37BFA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.028
- Greeny Blue #42B395 ΔE 0.033
- Green Blue #01C08D ΔE 0.035
- Greenblue #23C48B ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.046
- Medium Aquamarine #66CDAA ΔE 0.054
- Dark Seafoam #1FB57A ΔE 0.058
- Bluey Green #2BB179 ΔE 0.061
Use #37BFA1 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.