#4E63A9
Closest named color: French Blue (#436BAD). oklch(51.6% 0.114 269.5), rgb(78, 99, 169).
Aa
White text reads best on this color (5.70:1).
About this color
#4E63A9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.114 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.023 away. White text reads best on it, at 5.70:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #4E63A9 |
| RGB | rgb(78, 99, 169) |
| HSL | hsl(226, 37%, 48%) |
| OKLCH | oklch(51.6% 0.114 269.5) |
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 #4E63A9 | 5.70:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #4E63A9 | 3.68:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #4E63A9 text on white | 5.70:1 | AA | Lc 78.4 | Fine for body text |
| #4E63A9 text on black | 3.68:1 | AA large text | Lc -23.4 | 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
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B2C0E5
oklch(80.9% 0.055 268.9)
-
Step 400
400
#8B9ED8
oklch(70.7% 0.088 270.1)
-
Step 500
500
#6E85CE
oklch(63% 0.114 269.7)
-
Step 600
600
#576EBB
oklch(55.6% 0.123 269.6)
-
Step 700
700 (this color)
#4E63A9
oklch(51.6% 0.114 269.5)
-
Step 800
800
#3B4B82
oklch(42.7% 0.094 269.9)
-
Step 900
900
#323F69
oklch(37.7% 0.074 269.6)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#4E63A9 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) | #466BAC | 0.022 |
| Deuteranopia (no green cones) | #3C63A7 | 0.021 |
| Tritanopia (no blue cones) | #21727E | 0.101 |
| Achromatopsia (no color) | #666666 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E63A9
#4E63A9
oklch(51.6% 0.114 269.5)
- #806400
#806400
oklch(51.7% 0.106 89.4)
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 #4E63A9, closest first.
No curated palette has a color within ΔE 0.04 of #4E63A9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.023
- Dusky Blue #475F94 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.047
- Muted Blue #3B719F ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.049
- Denim #3B638C ΔE 0.054
- Dull Blue #49759C ΔE 0.060
Use #4E63A9 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.