#31CBFF
Closest named color: Bright Sky Blue (#02CCFE). oklch(78.8% 0.141 226.6), rgb(49, 203, 255).
Aa
Black text reads best on this color (11.11:1).
About this color
#31CBFF is a light, vivid teal or cyan. In OKLCH its lightness is 79%, its chroma 0.141 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.010 away. Black text reads best on it, at 11.11:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 11.11:1 |
| White text | 1.88:1 |
Values
| HEX | #31CBFF |
| RGB | rgb(49, 203, 255) |
| HSL | hsl(195, 100%, 60%) |
| OKLCH | oklch(78.8% 0.141 226.6) |
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 #31CBFF | 1.88:1 | Fails | Lc -39.6 | Non-text elements, placeholder text |
| Black text on #31CBFF | 11.11:1 | AAA | Lc 68.5 | Content text, not long reading |
| #31CBFF text on white | 1.88:1 | Fails | Lc 35.4 | Non-text elements, placeholder text |
| #31CBFF text on black | 11.11:1 | AAA | Lc -67.1 | 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
#EAF8FF
oklch(97.1% 0.018 229)
-
Step 100
100
#CFF0FF
oklch(93.6% 0.04 227)
-
Step 200
200
#A5E4FF
oklch(88.6% 0.074 226.4)
-
Step 300
300 (this color)
#31CBFF
oklch(78.8% 0.141 226.6)
-
Step 400
400
#00B0E1
oklch(70.6% 0.136 226.7)
-
Step 500
500
#0097C2
oklch(63.1% 0.122 226.9)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#31CBFF 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) | #AFC7FF | 0.104 |
| Deuteranopia (no green cones) | #94B4FE | 0.090 |
| Tritanopia (no blue cones) | #00DADC | 0.076 |
| Achromatopsia (no color) | #BCBCBC | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31CBFF
#31CBFF
oklch(78.8% 0.141 226.6)
- #FF9E6D
#FF9E6D
oklch(78.8% 0.133 47)
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 #31CBFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.010
- Vivid Sky Blue #4CC9F0 ΔE 0.022
- Deep Sky Blue #00BFFF ΔE 0.037
- Lightblue #7BC8F6 ΔE 0.047
- Sky #82CAFC ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.055
- Light Sky Blue #87CEFA ΔE 0.061
- Sky Blue #87CEEB ΔE 0.065
Use #31CBFF 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.