#4C5191
Closest named color: Twilight (#4E518B). oklch(46.2% 0.103 278.2), rgb(76, 81, 145).
Aa
White text reads best on this color (7.25:1).
About this color
#4C5191 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.103 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.010 away. White text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #4C5191 |
| RGB | rgb(76, 81, 145) |
| HSL | hsl(236, 31%, 43%) |
| OKLCH | oklch(46.2% 0.103 278.2) |
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 #4C5191 | 7.25:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #4C5191 | 2.89:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #4C5191 text on white | 7.25:1 | AAA | Lc 85.1 | Fine for body text |
| #4C5191 text on black | 2.89:1 | Fails | Lc -16.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B9BEE1
oklch(80.9% 0.05 278.8)
-
Step 400
400
#959CD2
oklch(70.7% 0.079 278.4)
-
Step 500
500
#7B83C7
oklch(63.1% 0.102 277.9)
-
Step 600
600
#656BB3
oklch(55.5% 0.111 278.5)
-
Step 700
700 (this color)
#4C5191
oklch(46.2% 0.103 278.2)
-
Step 800
800
#45497D
oklch(42.7% 0.086 278.8)
-
Step 900
900
#393E64
oklch(37.7% 0.065 277.1)
-
Step 950
950
#22243B
oklch(27% 0.043 279.3)
#4C5191 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) | #385993 | 0.031 |
| Deuteranopia (no green cones) | #335490 | 0.032 |
| Tritanopia (no blue cones) | #345E6A | 0.089 |
| Achromatopsia (no color) | #575757 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C5191
#4C5191
oklch(46.2% 0.103 278.2)
- #675800
#675800
oklch(46.1% 0.095 97.7)
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 #4C5191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.010
- Dusk #4E5481 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.039
- Dusk Blue #26538D ΔE 0.046
- Blueberry #464196 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.054
Use #4C5191 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.