#31ABE8
Closest named color: Deep Sky Blue (#00BFFF). oklch(70.3% 0.136 236), rgb(49, 171, 232).
Aa
Black text reads best on this color (8.12:1).
About this color
#31ABE8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.136 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.056 away. Black text reads best on it, at 8.12:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.12:1 |
| White text | 2.58:1 |
Values
| HEX | #31ABE8 |
| RGB | rgb(49, 171, 232) |
| HSL | hsl(200, 80%, 55%) |
| OKLCH | oklch(70.3% 0.136 236) |
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 #31ABE8 | 2.58:1 | Fails | Lc -55.2 | Large or bold text, headings |
| Black text on #31ABE8 | 8.12:1 | AAA | Lc 53.9 | Large or bold text, headings |
| #31ABE8 text on white | 2.58:1 | Fails | Lc 50.1 | Large or bold text, headings |
| #31ABE8 text on black | 8.12:1 | AAA | Lc -51.8 | Large or bold text, headings |
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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DBEDF8
oklch(93.6% 0.024 234.4)
-
Step 200
200
#BCDFF5
oklch(88.5% 0.048 235.7)
-
Step 300
300
#8ACAF0
oklch(81% 0.085 235.3)
-
Step 400
400 (this color)
#31ABE8
oklch(70.3% 0.136 236)
-
Step 500
500
#0094D0
oklch(63.1% 0.136 236.2)
-
Step 600
600
#007CAF
oklch(55.5% 0.12 236.1)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#31ABE8 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) | #8DAAEB | 0.080 |
| Deuteranopia (no green cones) | #7599E7 | 0.067 |
| Tritanopia (no blue cones) | #00BBC0 | 0.086 |
| Achromatopsia (no color) | #A1A1A1 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31ABE8
#31ABE8
oklch(70.3% 0.136 236)
- #DF8742
#DF8742
oklch(70.4% 0.136 56.1)
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 #31ABE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.078
- Greyblue #77A1B5 ΔE 0.084
- Vivid Sky Blue #4CC9F0 ΔE 0.086
- Bright Sky Blue #02CCFE ΔE 0.088
Use #31ABE8 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.