#4C55AB
Closest named color: Dusky Blue (#475F94). oklch(48.7% 0.136 275.6), rgb(76, 85, 171).
Aa
White text reads best on this color (6.57:1).
About this color
#4C55AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.136 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.050 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #4C55AB |
| RGB | rgb(76, 85, 171) |
| HSL | hsl(234, 38%, 48%) |
| OKLCH | oklch(48.7% 0.136 275.6) |
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 #4C55AB | 6.57:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #4C55AB | 3.19:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #4C55AB text on white | 6.57:1 | AA | Lc 82.3 | Fine for body text |
| #4C55AB text on black | 3.19:1 | AA large text | Lc -19.6 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B4BEEC
oklch(80.9% 0.066 275.3)
-
Step 400
400
#8E9BE2
oklch(70.7% 0.105 275.4)
-
Step 500
500
#7480DA
oklch(63.1% 0.135 276.1)
-
Step 600
600
#5D68C7
oklch(55.6% 0.146 275.6)
-
Step 700
700 (this color)
#4C55AB
oklch(48.7% 0.136 275.6)
-
Step 800
800
#3F478B
oklch(42.7% 0.112 275.6)
-
Step 900
900
#353C6F
oklch(37.7% 0.087 275.5)
-
Step 950
950
#1F2341
oklch(26.9% 0.056 276.2)
#4C55AB 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) | #2A61AE | 0.044 |
| Deuteranopia (no green cones) | #1C59A9 | 0.048 |
| Tritanopia (no blue cones) | #1B6878 | 0.119 |
| Achromatopsia (no color) | #5D5D5D | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C55AB
#4C55AB
oklch(48.7% 0.136 275.6)
- #715E00
#715E00
oklch(48.6% 0.1 95.2)
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 #4C55AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.051
- Twilight #4E518B ΔE 0.051
- Iris #6258C4 ΔE 0.052
- French Blue #436BAD ΔE 0.059
- Blueberry #464196 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
- Dusk #4E5481 ΔE 0.068
Use #4C55AB 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.