#37CCF8
Closest named color: Bright Sky Blue (#02CCFE). oklch(78.8% 0.134 222.9), rgb(55, 204, 248).
Aa
Black text reads best on this color (11.15:1).
About this color
#37CCF8 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.134 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.013 away. Black text reads best on it, at 11.15:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 11.15:1 |
| White text | 1.88:1 |
Values
| HEX | #37CCF8 |
| RGB | rgb(55, 204, 248) |
| HSL | hsl(194, 93%, 59%) |
| OKLCH | oklch(78.8% 0.134 222.9) |
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 #37CCF8 | 1.88:1 | Fails | Lc -39.5 | Non-text elements, placeholder text |
| Black text on #37CCF8 | 11.15:1 | AAA | Lc 68.6 | Content text, not long reading |
| #37CCF8 text on white | 1.88:1 | Fails | Lc 35.3 | Non-text elements, placeholder text |
| #37CCF8 text on black | 11.15:1 | AAA | Lc -67.3 | 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 300.
-
Step 50
50
#E9F8FE
oklch(97% 0.018 223.6)
-
Step 100
100
#CFF0FD
oklch(93.5% 0.039 223.6)
-
Step 200
200
#A2E5FD
oklch(88.5% 0.075 222.3)
-
Step 300
300 (this color)
#37CCF8
oklch(78.8% 0.134 222.9)
-
Step 400
400
#00B1DC
oklch(70.6% 0.132 223.3)
-
Step 500
500
#0098BD
oklch(63.1% 0.118 223.1)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002B38
oklch(26.8% 0.05 223.6)
#37CCF8 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) | #B3C7FA | 0.107 |
| Deuteranopia (no green cones) | #99B5F8 | 0.093 |
| Tritanopia (no blue cones) | #00DADA | 0.068 |
| Achromatopsia (no color) | #BDBDBD | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CCF8
#37CCF8
oklch(78.8% 0.134 222.9)
- #FF9D75
#FF9D75
oklch(78.8% 0.129 42.8)
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 #37CCF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.013
- Vivid Sky Blue #4CC9F0 ΔE 0.014
- Deep Sky Blue #00BFFF ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.045
- Aqua Blue #02D8E9 ΔE 0.046
- Sky #82CAFC ΔE 0.053
- Light Sky Blue #87CEFA ΔE 0.058
- Sky Blue #87CEEB ΔE 0.059
Use #37CCF8 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.