#0A63CE
Closest named color: Azul (#1D5DEC). oklch(51.8% 0.182 257.6), rgb(10, 99, 206).
Aa
White text reads best on this color (5.69:1).
About this color
#0A63CE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.182 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.049 away. White text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #0A63CE |
| RGB | rgb(10, 99, 206) |
| HSL | hsl(213, 91%, 42%) |
| OKLCH | oklch(51.8% 0.182 257.6) |
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 #0A63CE | 5.69:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #0A63CE | 3.68:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #0A63CE text on white | 5.69:1 | AA | Lc 77.7 | Fine for body text |
| #0A63CE text on black | 3.68:1 | AA large text | Lc -24.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9DC3FA
oklch(81% 0.088 257.6)
-
Step 400
400
#66A1F7
oklch(70.6% 0.141 257.8)
-
Step 500
500
#3987F4
oklch(63.2% 0.18 257.6)
-
Step 600
600
#0C6DE3
oklch(55.6% 0.197 257.7)
-
Step 700
700 (this color)
#0A63CE
oklch(51.8% 0.182 257.6)
-
Step 800
800
#054B9F
oklch(42.8% 0.15 257.4)
-
Step 900
900
#113F7E
oklch(37.6% 0.118 257.7)
-
Step 950
950
#0C264A
oklch(27.1% 0.074 257.4)
#0A63CE 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) | #106FD2 | 0.032 |
| Deuteranopia (no green cones) | #005FCC | 0.012 |
| Tritanopia (no blue cones) | #007E8F | 0.138 |
| Achromatopsia (no color) | #676767 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A63CE
#0A63CE
oklch(51.8% 0.182 257.6)
- #8A5F00
#8A5F00
oklch(51.8% 0.108 77.9)
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 #0A63CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.049
- Mid Blue #276AB3 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.055
- Warm Blue #4B57DB ΔE 0.056
- Neon Blue #4361EE ΔE 0.063
- French Blue #436BAD ΔE 0.070
- Bright Blue #0165FC ΔE 0.070
Use #0A63CE 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.