#0A9DEB
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.7% 0.157 242), rgb(10, 157, 235).
Aa
Black text reads best on this color (7.03:1).
About this color
#0A9DEB is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.157 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.033 away. Black text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.03:1 |
| White text | 2.98:1 |
Values
| HEX | #0A9DEB |
| RGB | rgb(10, 157, 235) |
| HSL | hsl(201, 92%, 48%) |
| OKLCH | oklch(66.7% 0.157 242) |
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 #0A9DEB | 2.98:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #0A9DEB | 7.03:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #0A9DEB text on white | 2.98:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #0A9DEB text on black | 7.03:1 | AAA | Lc -46.0 | 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 500.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C1DDF3
oklch(88.4% 0.043 241.7)
-
Step 300
300
#95C7EE
oklch(80.8% 0.076 242.3)
-
Step 400
400
#52A9E6
oklch(70.7% 0.123 241.9)
-
Step 500
500 (this color)
#0A9DEB
oklch(66.7% 0.157 242)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#0A9DEB 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) | #779FEE | 0.072 |
| Deuteranopia (no green cones) | #5A8DEA | 0.054 |
| Tritanopia (no blue cones) | #00B0B9 | 0.105 |
| Achromatopsia (no color) | #959595 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A9DEB
#0A9DEB
oklch(66.7% 0.157 242)
- #D57B00
#D57B00
oklch(66.7% 0.153 62.3)
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 #0A9DEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.042
- Dodger Blue #1E90FF ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.053
- Soft Blue #6488EA ΔE 0.070
- Water Blue #0E87CC ΔE 0.070
- Faded Blue #658CBB ΔE 0.085
- Cool Blue #4984B8 ΔE 0.091
Use #0A9DEB 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.