#4B63AA
Closest named color: French Blue (#436BAD). oklch(51.5% 0.116 268.1), rgb(75, 99, 170).
Aa
White text reads best on this color (5.73:1).
About this color
#4B63AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.116 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.022 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #4B63AA |
| RGB | rgb(75, 99, 170) |
| HSL | hsl(225, 39%, 48%) |
| OKLCH | oklch(51.5% 0.116 268.1) |
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 #4B63AA | 5.73:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #4B63AA | 3.66:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #4B63AA text on white | 5.73:1 | AA | Lc 78.5 | Fine for body text |
| #4B63AA text on black | 3.66:1 | AA large text | Lc -23.3 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B1C0E6
oklch(80.9% 0.056 268.2)
-
Step 400
400
#899FD9
oklch(70.8% 0.089 268.1)
-
Step 500
500
#6C86CF
oklch(63.1% 0.114 268.2)
-
Step 600
600
#546EBC
oklch(55.5% 0.125 268.3)
-
Step 700
700 (this color)
#4B63AA
oklch(51.5% 0.116 268.1)
-
Step 800
800
#384B83
oklch(42.6% 0.096 268)
-
Step 900
900
#303F69
oklch(37.6% 0.075 267.8)
-
Step 950
950
#1C253E
oklch(26.9% 0.049 268)
#4B63AA 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) | #456BAD | 0.022 |
| Deuteranopia (no green cones) | #3962A8 | 0.021 |
| Tritanopia (no blue cones) | #14737E | 0.105 |
| Achromatopsia (no color) | #666666 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B63AA
#4B63AA
oklch(51.5% 0.116 268.1)
- #816300
#816300
oklch(51.6% 0.105 87.8)
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 #4B63AA, closest first.
No curated palette has a color within ΔE 0.04 of #4B63AA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.022
- Dusky Blue #475F94 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.036
- Flat Blue #3C73A8 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.048
- Muted Blue #3B719F ΔE 0.049
- Denim #3B638C ΔE 0.054
- Iris #6258C4 ΔE 0.061
Use #4B63AA 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.