#4C63B0
Closest named color: French Blue (#436BAD). oklch(51.9% 0.125 269.2), rgb(76, 99, 176).
Aa
White text reads best on this color (5.64:1).
About this color
#4C63B0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.125 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.024 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #4C63B0 |
| RGB | rgb(76, 99, 176) |
| HSL | hsl(226, 40%, 49%) |
| OKLCH | oklch(51.9% 0.125 269.2) |
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 #4C63B0 | 5.64:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #4C63B0 | 3.71:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #4C63B0 text on white | 5.64:1 | AA | Lc 78.1 | Fine for body text |
| #4C63B0 text on black | 3.71:1 | AA large text | Lc -23.7 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1C0E9
oklch(81% 0.06 269.3)
-
Step 400
400
#889EDD
oklch(70.7% 0.096 269.1)
-
Step 500
500
#6B85D4
oklch(63.1% 0.123 268.9)
-
Step 600
600
#546DC1
oklch(55.6% 0.134 269.2)
-
Step 700
700 (this color)
#4C63B0
oklch(51.9% 0.125 269.2)
-
Step 800
800
#384A87
oklch(42.6% 0.104 269.3)
-
Step 900
900
#303F6C
oklch(37.8% 0.08 268.5)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#4C63B0 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) | #416CB3 | 0.025 |
| Deuteranopia (no green cones) | #3463AE | 0.026 |
| Tritanopia (no blue cones) | #0C7481 | 0.111 |
| Achromatopsia (no color) | #676767 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C63B0
#4C63B0
oklch(51.9% 0.125 269.2)
- #816500
#816500
oklch(52% 0.106 89.6)
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 #4C63B0, closest first.
No curated palette has a color within ΔE 0.04 of #4C63B0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.024
- Mid Blue #276AB3 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.050
- Iris #6258C4 ΔE 0.053
- Muted Blue #3B719F ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.056
- Windows Blue #3778BF ΔE 0.058
Use #4C63B0 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.