#37C1E6
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.5% 0.124 220.4), rgb(55, 193, 230).
Aa
Black text reads best on this color (9.93:1).
About this color
#37C1E6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.124 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.028 away. Black text reads best on it, at 9.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #37C1E6 |
| RGB | rgb(55, 193, 230) |
| HSL | hsl(193, 78%, 56%) |
| OKLCH | oklch(75.5% 0.124 220.4) |
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 #37C1E6 | 2.11:1 | Fails | Lc -45.6 | Large or bold text, headings |
| Black text on #37C1E6 | 9.93:1 | AAA | Lc 62.9 | Content text, not long reading |
| #37C1E6 text on white | 2.11:1 | Fails | Lc 41.0 | Non-text elements, placeholder text |
| #37C1E6 text on black | 9.93:1 | AAA | Lc -61.3 | Content text, not long reading |
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
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#DAEEF4
oklch(93.6% 0.023 217.6)
-
Step 200
200
#BBE0ED
oklch(88.4% 0.043 221.1)
-
Step 300
300
#86CDE4
oklch(81% 0.078 220.4)
-
Step 400
400 (this color)
#37C1E6
oklch(75.5% 0.124 220.4)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#37C1E6 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) | #ABBCE8 | 0.103 |
| Deuteranopia (no green cones) | #93ABE6 | 0.091 |
| Tritanopia (no blue cones) | #00CDCD | 0.059 |
| Achromatopsia (no color) | #B2B2B2 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37C1E6
#37C1E6
oklch(75.5% 0.124 220.4)
- #F29371
#F29371
oklch(75.5% 0.125 40.4)
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 #37C1E6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.028
- Bright Sky Blue #02CCFE ΔE 0.039
- Deep Sky Blue #00BFFF ΔE 0.040
- Dark Turquoise #00CED1 ΔE 0.056
- Lightblue #7BC8F6 ΔE 0.060
- Aqua Blue #02D8E9 ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.064
- Medium Turquoise #48D1CC ΔE 0.068
Use #37C1E6 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.