#31C2FF
Closest named color: Deep Sky Blue (#00BFFF). oklch(76.7% 0.145 232.1), rgb(49, 194, 255).
Aa
Black text reads best on this color (10.29:1).
About this color
#31C2FF is a medium-light, vivid blue. In OKLCH its lightness is 77%, its chroma 0.145 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.015 away. Black text reads best on it, at 10.29:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.29:1 |
| White text | 2.04:1 |
Values
| HEX | #31C2FF |
| RGB | rgb(49, 194, 255) |
| HSL | hsl(198, 100%, 60%) |
| OKLCH | oklch(76.7% 0.145 232.1) |
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 #31C2FF | 2.04:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #31C2FF | 10.29:1 | AAA | Lc 64.7 | Content text, not long reading |
| #31C2FF text on white | 2.04:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #31C2FF text on black | 10.29:1 | AAA | Lc -63.1 | 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
#EBF8FF
oklch(97.1% 0.017 230.9)
-
Step 100
100
#D2EFFF
oklch(93.6% 0.037 231.9)
-
Step 200
200
#ACE2FF
oklch(88.5% 0.068 232)
-
Step 300
300 (this color)
#31C2FF
oklch(76.7% 0.145 232.1)
-
Step 400
400
#00AFEA
oklch(70.8% 0.144 231.6)
-
Step 500
500
#0096CA
oklch(63.2% 0.129 232.1)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A90
oklch(49.2% 0.1 232)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3D
oklch(27.1% 0.055 231.9)
#31C2FF 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) | #A3C0FF | 0.093 |
| Deuteranopia (no green cones) | #88ADFE | 0.080 |
| Tritanopia (no blue cones) | #00D2D7 | 0.084 |
| Achromatopsia (no color) | #B5B5B5 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31C2FF
#31C2FF
oklch(76.7% 0.145 232.1)
- #FA9655
#FA9655
oklch(76.6% 0.145 52)
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 #31C2FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.015
- Bright Sky Blue #02CCFE ΔE 0.028
- Vivid Sky Blue #4CC9F0 ΔE 0.036
- Lightblue #7BC8F6 ΔE 0.056
- Sky #82CAFC ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.068
- Light Sky Blue #87CEFA ΔE 0.074
- Aqua Blue #02D8E9 ΔE 0.077
Use #31C2FF 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.