#0B63D8
Closest named color: Azul (#1D5DEC). oklch(52.6% 0.195 258.8), rgb(11, 99, 216).
Aa
White text reads best on this color (5.54:1).
About this color
#0B63D8 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.195 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.034 away. White text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.79:1 |
| White text | 5.54:1 |
Values
| HEX | #0B63D8 |
| RGB | rgb(11, 99, 216) |
| HSL | hsl(214, 90%, 45%) |
| OKLCH | oklch(52.6% 0.195 258.8) |
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 #0B63D8 | 5.54:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #0B63D8 | 3.79:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #0B63D8 text on white | 5.54:1 | AA | Lc 76.9 | Fine for body text |
| #0B63D8 text on black | 3.79:1 | AA large text | Lc -24.9 | 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 600.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC2FA
oklch(80.8% 0.089 259.1)
-
Step 400
400
#69A1F7
oklch(70.8% 0.14 258.7)
-
Step 500
500
#3E86F4
oklch(63.1% 0.18 258.8)
-
Step 600
600 (this color)
#0B63D8
oklch(52.6% 0.195 258.8)
-
Step 700
700
#0A5AC5
oklch(49.2% 0.181 258.8)
-
Step 800
800
#0E4A9F
oklch(42.7% 0.15 258.8)
-
Step 900
900
#153F7E
oklch(37.7% 0.117 258.8)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#0B63D8 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) | #0071DC | 0.036 |
| Deuteranopia (no green cones) | #0060D6 | 0.009 |
| Tritanopia (no blue cones) | #008094 | 0.146 |
| Achromatopsia (no color) | #686868 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B63D8
#0B63D8
oklch(52.6% 0.195 258.8)
- #8C6200
#8C6200
oklch(52.7% 0.109 79.3)
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 #0B63D8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.034
- Cerulean Blue #056EEE ΔE 0.042
- Royal Blue #4169E1 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.050
- Neon Blue #4361EE ΔE 0.051
- Bright Blue #0165FC ΔE 0.055
- Mid Blue #276AB3 ΔE 0.064
- Electric Blue #0652FF ΔE 0.070
Use #0B63D8 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.