#4B57CE
Closest named color: Warm Blue (#4B57DB). oklch(51.6% 0.182 273.8), rgb(75, 87, 206).
Aa
White text reads best on this color (5.90:1).
About this color
#4B57CE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.182 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.020 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #4B57CE |
| RGB | rgb(75, 87, 206) |
| HSL | hsl(235, 57%, 55%) |
| OKLCH | oklch(51.6% 0.182 273.8) |
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 #4B57CE | 5.90:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #4B57CE | 3.55:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #4B57CE text on white | 5.90:1 | AA | Lc 79.1 | Fine for body text |
| #4B57CE text on black | 3.55:1 | AA large text | Lc -22.7 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#AEBDFA
oklch(80.9% 0.088 273.6)
-
Step 400
400
#8598F8
oklch(70.6% 0.142 273.8)
-
Step 500
500
#6A7BF4
oklch(63% 0.18 274)
-
Step 600
600
#5461E3
oklch(55.6% 0.195 273.9)
-
Step 700
700 (this color)
#4B57CE
oklch(51.6% 0.182 273.8)
-
Step 800
800
#3842A0
oklch(42.8% 0.151 273.6)
-
Step 900
900
#30397F
oklch(37.8% 0.118 273.9)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#4B57CE 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) | #006AD2 | 0.060 |
| Deuteranopia (no green cones) | #005ECC | 0.052 |
| Tritanopia (no blue cones) | #00748A | 0.153 |
| Achromatopsia (no color) | #646464 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B57CE
#4B57CE
oklch(51.6% 0.182 273.8)
- #7C6600
#7C6600
oklch(51.7% 0.106 94.1)
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 #4B57CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.020
- Iris #6258C4 ΔE 0.037
- Dark Periwinkle #665FD1 ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.047
- Royal Blue #4169E1 ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.051
- Neon Blue #4361EE ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.055
Use #4B57CE 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.