#31CDFE
Closest named color: Bright Sky Blue (#02CCFE). oklch(79.2% 0.14 224.9), rgb(49, 205, 254).
Aa
Black text reads best on this color (11.29:1).
About this color
#31CDFE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.140 and its hue 225°. 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 11.29:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 11.29:1 |
| White text | 1.85:1 |
Values
| HEX | #31CDFE |
| RGB | rgb(49, 205, 254) |
| HSL | hsl(194, 99%, 59%) |
| OKLCH | oklch(79.2% 0.14 224.9) |
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 #31CDFE | 1.85:1 | Fails | Lc -38.7 | Non-text elements, placeholder text |
| Black text on #31CDFE | 11.29:1 | AAA | Lc 69.3 | Content text, not long reading |
| #31CDFE text on white | 1.85:1 | Fails | Lc 34.6 | Non-text elements, placeholder text |
| #31CDFE text on black | 11.29:1 | AAA | Lc -68.0 | 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
#E9F8FF
oklch(97% 0.018 227.3)
-
Step 100
100
#CEF0FE
oklch(93.5% 0.04 224.6)
-
Step 200
200
#A2E4FF
oklch(88.4% 0.076 225.4)
-
Step 300
300 (this color)
#31CDFE
oklch(79.2% 0.14 224.9)
-
Step 400
400
#00B1DF
oklch(70.7% 0.134 225)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#31CDFE 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) | #B2C9FF | 0.106 |
| Deuteranopia (no green cones) | #97B6FD | 0.092 |
| Tritanopia (no blue cones) | #00DCDD | 0.073 |
| Achromatopsia (no color) | #BEBEBE | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31CDFE
#31CDFE
oklch(79.2% 0.14 224.9)
- #FF9F74
#FF9F74
oklch(79.1% 0.128 44.6)
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 #31CDFE, 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 0.021
- Deep Sky Blue #00BFFF ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.046
- Aqua Blue #02D8E9 ΔE 0.050
- Sky #82CAFC ΔE 0.053
- Light Sky Blue #87CEFA ΔE 0.059
- Sky Blue #87CEEB ΔE 0.062
Use #31CDFE 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.