#37B7BB
Closest named color: Topaz (#13BBAF). oklch(71.4% 0.108 198.1), rgb(55, 183, 187).
Aa
Black text reads best on this color (8.65:1).
About this color
#37B7BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.108 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.027 away. Black text reads best on it, at 8.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.65:1 |
| White text | 2.42:1 |
Values
| HEX | #37B7BB |
| RGB | rgb(55, 183, 187) |
| HSL | hsl(182, 55%, 47%) |
| OKLCH | oklch(71.4% 0.108 198.1) |
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 #37B7BB | 2.42:1 | Fails | Lc -52.4 | Large or bold text, headings |
| Black text on #37B7BB | 8.65:1 | AAA | Lc 56.6 | Large or bold text, headings |
| #37B7BB text on white | 2.42:1 | Fails | Lc 47.4 | Large or bold text, headings |
| #37B7BB text on black | 8.65:1 | AAA | Lc -54.6 | 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
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100
#DCEEEE
oklch(93.6% 0.019 196.8)
-
Step 200
200
#BEE1E2
oklch(88.5% 0.037 198.6)
-
Step 300
300
#8CCED0
oklch(80.8% 0.067 198.3)
-
Step 400
400 (this color)
#37B7BB
oklch(71.4% 0.108 198.1)
-
Step 500
500
#009DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#37B7BB 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) | #AAAFBB | 0.110 |
| Deuteranopia (no green cones) | #97A0BC | 0.104 |
| Tritanopia (no blue cones) | #00BDB8 | 0.022 |
| Achromatopsia (no color) | #A6A6A6 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B7BB
#37B7BB
oklch(71.4% 0.108 198.1)
- #DE8689
#DE8689
oklch(71.4% 0.108 17.9)
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 #37B7BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.027
- Turquoise Blue #06B1C4 ΔE 0.029
- Light Sea Green #20B2AA ΔE 0.029
- Greeny Blue #42B395 ΔE 0.053
- Dark Turquoise #00CED1 ΔE 0.063
- Cadet Blue #5F9EA0 ΔE 0.071
- Greyblue #77A1B5 ΔE 0.073
- Medium Turquoise #48D1CC ΔE 0.075
Use #37B7BB 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.