#0063E7
Closest named color: Azul (#1D5DEC). oklch(53.7% 0.215 259.6), rgb(0, 99, 231).
Aa
White text reads best on this color (5.33:1).
About this color
#0063E7 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.215 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.017 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #0063E7 |
| RGB | rgb(0, 99, 231) |
| HSL | hsl(214, 100%, 45%) |
| OKLCH | oklch(53.7% 0.215 259.6) |
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 #0063E7 | 5.33:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #0063E7 | 3.93:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #0063E7 text on white | 5.33:1 | AA | Lc 75.5 | Fine for body text |
| #0063E7 text on black | 3.93:1 | AA large text | Lc -26.2 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFD
oklch(88.6% 0.053 259)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#65A0FF
oklch(70.8% 0.153 259.5)
-
Step 500
500
#3784FE
oklch(63.1% 0.197 259.5)
-
Step 600
600 (this color)
#0063E7
oklch(53.7% 0.215 259.6)
-
Step 700
700
#0057CD
oklch(49.1% 0.196 259.6)
-
Step 800
800
#0548A7
oklch(42.8% 0.165 259.5)
-
Step 900
900
#103D84
oklch(37.6% 0.129 259.7)
-
Step 950
950
#0B254D
oklch(27% 0.081 259)
#0063E7 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) | #0075EB | 0.045 |
| Deuteranopia (no green cones) | #0062E4 | 0.005 |
| Tritanopia (no blue cones) | #00859B | 0.163 |
| Achromatopsia (no color) | #6B6B6B | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0063E7
#0063E7
oklch(53.7% 0.215 259.6)
- #906500
#906500
oklch(53.8% 0.112 79.4)
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 #0063E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.017
- Cerulean Blue #056EEE ΔE 0.029
- Bright Blue #0165FC ΔE 0.032
- Neon Blue #4361EE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.042
- Electric Blue #0652FF ΔE 0.050
- Warm Blue #4B57DB ΔE 0.053
- Clear Blue #247AFD ΔE 0.068
Use #0063E7 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.