#4E57A5
Closest named color: Dusky Blue (#475F94). oklch(48.9% 0.124 275.9), rgb(78, 87, 165).
Aa
White text reads best on this color (6.50:1).
About this color
#4E57A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.124 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.039 away. White text reads best on it, at 6.50:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.23:1 |
| White text | 6.50:1 |
Values
| HEX | #4E57A5 |
| RGB | rgb(78, 87, 165) |
| HSL | hsl(234, 36%, 48%) |
| OKLCH | oklch(48.9% 0.124 275.9) |
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 #4E57A5 | 6.50:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #4E57A5 | 3.23:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #4E57A5 text on white | 6.50:1 | AA | Lc 82.1 | Fine for body text |
| #4E57A5 text on black | 3.23:1 | AA large text | Lc -19.8 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B5BEE8
oklch(80.9% 0.06 275.5)
-
Step 400
400
#909CDC
oklch(70.8% 0.095 275.6)
-
Step 500
500
#7682D3
oklch(63.2% 0.122 275.9)
-
Step 600
600
#5F6AC0
oklch(55.6% 0.133 275.7)
-
Step 700
700 (this color)
#4E57A5
oklch(48.9% 0.124 275.9)
-
Step 800
800
#404886
oklch(42.6% 0.102 275.6)
-
Step 900
900
#363D6C
oklch(37.8% 0.081 275.5)
-
Step 950
950
#20243F
oklch(27.1% 0.05 276.1)
#4E57A5 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) | #3462A8 | 0.039 |
| Deuteranopia (no green cones) | #2B5AA3 | 0.040 |
| Tritanopia (no blue cones) | #286876 | 0.109 |
| Achromatopsia (no color) | #5E5E5E | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E57A5
#4E57A5
oklch(48.9% 0.124 275.9)
- #715F00
#715F00
oklch(48.9% 0.101 96.1)
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 #4E57A5, closest first.
No curated palette has a color within ΔE 0.04 of #4E57A5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.042
- Twilight #4E518B ΔE 0.043
- French Blue #436BAD ΔE 0.054
- Dusk #4E5481 ΔE 0.058
- Iris #6258C4 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.060
- Denim #3B638C ΔE 0.062
Use #4E57A5 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.