#4757DC
Closest named color: Warm Blue (#4B57DB). oklch(52.5% 0.202 272.2), rgb(71, 87, 220).
Aa
White text reads best on this color (5.73:1).
About this color
#4757DC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.202 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.005 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.202) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #4757DC |
| RGB | rgb(71, 87, 220) |
| HSL | hsl(234, 68%, 57%) |
| OKLCH | oklch(52.5% 0.202 272.2) |
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 #4757DC | 5.73:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #4757DC | 3.66:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #4757DC text on white | 5.73:1 | AA | Lc 78.1 | Fine for body text |
| #4757DC text on black | 3.66:1 | AA large text | Lc -23.7 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBDFC
oklch(80.8% 0.091 272.6)
-
Step 400
400
#8299FB
oklch(70.8% 0.146 272.2)
-
Step 500
500
#657CF8
oklch(63.2% 0.186 272.1)
-
Step 600
600 (this color)
#4757DC
oklch(52.5% 0.202 272.2)
-
Step 700
700
#404FC9
oklch(49.1% 0.188 272.1)
-
Step 800
800
#3542A2
oklch(42.8% 0.155 272.3)
-
Step 900
900
#2D3981
oklch(37.8% 0.121 272.2)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#4757DC 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) | #006DE0 | 0.060 |
| Deuteranopia (no green cones) | #005FD9 | 0.046 |
| Tritanopia (no blue cones) | #007891 | 0.163 |
| Achromatopsia (no color) | #666666 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4757DC
#4757DC
oklch(52.5% 0.202 272.2)
- #816800
#816800
oklch(52.7% 0.108 92.2)
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 #4757DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.005
- Neon Blue #4361EE ΔE 0.035
- Royal Blue #4169E1 ΔE 0.042
- Azul #1D5DEC ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.052
- Iris #6258C4 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.059
Use #4757DC 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.