#4C588D
Closest named color: Twilight (#4E518B). oklch(47.5% 0.087 273), rgb(76, 88, 141).
Aa
White text reads best on this color (6.80:1).
About this color
#4C588D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.087 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.019 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #4C588D |
| RGB | rgb(76, 88, 141) |
| HSL | hsl(229, 30%, 43%) |
| OKLCH | oklch(47.5% 0.087 273) |
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 #4C588D | 6.80:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #4C588D | 3.08:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #4C588D text on white | 6.80:1 | AA | Lc 83.4 | Fine for body text |
| #4C588D text on black | 3.08:1 | AA large text | Lc -18.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B7BFDD
oklch(80.8% 0.043 273.6)
-
Step 400
400
#929ECB
oklch(70.6% 0.067 273)
-
Step 500
500
#7886BE
oklch(63.1% 0.086 272.9)
-
Step 600
600
#616FAA
oklch(55.6% 0.093 272.9)
-
Step 700
700 (this color)
#4C588D
oklch(47.5% 0.087 273)
-
Step 800
800
#424C77
oklch(42.8% 0.073 273)
-
Step 900
900
#383F60
oklch(37.7% 0.057 274.2)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#4C588D 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) | #455E8F | 0.018 |
| Deuteranopia (no green cones) | #3F588C | 0.017 |
| Tritanopia (no blue cones) | #35636C | 0.077 |
| Achromatopsia (no color) | #5B5B5B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C588D
#4C588D
oklch(47.5% 0.087 273)
- #6D5A16
#6D5A16
oklch(47.4% 0.087 92.6)
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 #4C588D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.019
- Dusk #4E5481 ΔE 0.020
- Dusky Blue #475F94 ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.022
- Denim #3B638C ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.037
- Dusty Grape #545775 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.042
Use #4C588D 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.