#4B4E91
Closest named color: Twilight (#4E518B). oklch(45.5% 0.108 279.3), rgb(75, 78, 145).
Aa
White text reads best on this color (7.50:1).
About this color
#4B4E91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.108 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.015 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #4B4E91 |
| RGB | rgb(75, 78, 145) |
| HSL | hsl(237, 32%, 43%) |
| OKLCH | oklch(45.5% 0.108 279.3) |
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 #4B4E91 | 7.50:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #4B4E91 | 2.79:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #4B4E91 text on white | 7.50:1 | AAA | Lc 85.9 | Fine for body text |
| #4B4E91 text on black | 2.79:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B7BDE9
oklch(80.8% 0.062 278.8)
-
Step 400
400
#939ADF
oklch(70.7% 0.101 279)
-
Step 500
500
#7A7FD6
oklch(63.1% 0.13 279.5)
-
Step 600
600
#6467C3
oklch(55.6% 0.14 279.4)
-
Step 700
700
#5355A8
oklch(49% 0.13 279.4)
-
Step 800
800 (this color)
#4B4E91
oklch(45.5% 0.108 279.3)
-
Step 900
900
#393B6D
oklch(37.6% 0.084 279.8)
-
Step 950
950
#212340
oklch(27% 0.054 279.2)
#4B4E91 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) | #335793 | 0.036 |
| Deuteranopia (no green cones) | #2E528F | 0.037 |
| Tritanopia (no blue cones) | #325C68 | 0.094 |
| Achromatopsia (no color) | #555555 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4E91
#4B4E91
oklch(45.5% 0.108 279.3)
- #645700
#645700
oklch(45.6% 0.094 99.2)
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 #4B4E91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.015
- Dusk #4E5481 ΔE 0.035
- Blueberry #464196 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.039
- Dusk Blue #26538D ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.051
Use #4B4E91 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.