#37A8CF
Closest named color: Turquoise Blue (#06B1C4). oklch(68.6% 0.114 225.5), rgb(55, 168, 207).
Aa
Black text reads best on this color (7.66:1).
About this color
#37A8CF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.114 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.037 away. Black text reads best on it, at 7.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.66:1 |
| White text | 2.73:1 |
Values
| HEX | #37A8CF |
| RGB | rgb(55, 168, 207) |
| HSL | hsl(195, 61%, 51%) |
| OKLCH | oklch(68.6% 0.114 225.5) |
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 #37A8CF | 2.73:1 | Fails | Lc -57.9 | Large or bold text, headings |
| Black text on #37A8CF | 7.66:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #37A8CF text on white | 2.73:1 | Fails | Lc 52.6 | Large or bold text, headings |
| #37A8CF text on black | 7.66:1 | AAA | Lc -49.2 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DCEDF4
oklch(93.6% 0.02 224.3)
-
Step 200
200
#BFDFED
oklch(88.5% 0.039 226.1)
-
Step 300
300
#8ECBE4
oklch(80.9% 0.072 225.5)
-
Step 400
400 (this color)
#37A8CF
oklch(68.6% 0.114 225.5)
-
Step 500
500
#0097C0
oklch(63% 0.12 225.7)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005871
oklch(42.8% 0.081 225.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#37A8CF 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) | #93A5D1 | 0.087 |
| Deuteranopia (no green cones) | #7E96CF | 0.075 |
| Tritanopia (no blue cones) | #00B3B5 | 0.060 |
| Achromatopsia (no color) | #9C9C9C | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A8CF
#37A8CF
oklch(68.6% 0.114 225.5)
- #D4825C
#D4825C
oklch(68.5% 0.114 45.2)
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 #37A8CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.037
- Greyblue #77A1B5 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.069
- Light Sea Green #20B2AA ΔE 0.072
- Bluegrey #85A3B2 ΔE 0.075
- Faded Blue #658CBB ΔE 0.079
- Chefchaouen Blue #4895EF ΔE 0.080
- Bluey Grey #89A0B0 ΔE 0.080
Use #37A8CF 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.