#31A0FA
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.7% 0.164 248), rgb(49, 160, 250).
Aa
Black text reads best on this color (7.53:1).
About this color
#31A0FA is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.164 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.031 away. Black text reads best on it, at 7.53:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.53:1 |
| White text | 2.78:1 |
Values
| HEX | #31A0FA |
| RGB | rgb(49, 160, 250) |
| HSL | hsl(207, 95%, 59%) |
| OKLCH | oklch(68.7% 0.164 248) |
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 #31A0FA | 2.78:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #31A0FA | 7.53:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #31A0FA text on white | 2.78:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #31A0FA text on black | 7.53:1 | AAA | Lc -48.7 | 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
#EFF7FF
oklch(97.2% 0.014 248)
-
Step 100
100
#DBECFD
oklch(93.6% 0.029 248.1)
-
Step 200
200
#BCDDFE
oklch(88.4% 0.058 248.5)
-
Step 300
300
#8BC7FF
oklch(81% 0.101 247.5)
-
Step 400
400 (this color)
#31A0FA
oklch(68.7% 0.164 248)
-
Step 500
500
#008EEA
oklch(63.2% 0.17 248)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#004474
oklch(37.7% 0.101 247.8)
-
Step 950
950
#002848
oklch(27% 0.073 248.1)
#31A0FA 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) | #75A5FE | 0.058 |
| Deuteranopia (no green cones) | #5793F8 | 0.039 |
| Tritanopia (no blue cones) | #00B6C1 | 0.119 |
| Achromatopsia (no color) | #9B9B9B | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31A0FA
#31A0FA
oklch(68.7% 0.164 248)
- #D68600
#D68600
oklch(68.8% 0.151 68.4)
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 #31A0FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.031
- Cornflower Blue #6495ED ΔE 0.044
- Dodger Blue #1E90FF ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.052
- Soft Blue #6488EA ΔE 0.068
- Deep Sky Blue #00BFFF ΔE 0.082
- Periwinkle Blue #8F99FB ΔE 0.086
- Water Blue #0E87CC ΔE 0.093
Use #31A0FA 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.