#E03B53
Closest named color: Imperial Red (#E63946). oklch(60.6% 0.2 17.8), rgb(224, 59, 83).
Aa
Black text reads best on this color (4.91:1).
About this color
#E03B53 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.200 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.019 away. Black text reads best on it, at 4.91:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 4.91:1 |
| White text | 4.26:1 |
Values
| HEX | #E03B53 |
| RGB | rgb(224, 59, 83) |
| HSL | hsl(351, 73%, 55%) |
| OKLCH | oklch(60.6% 0.2 17.8) |
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 #E03B53 | 4.26:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #E03B53 | 4.91:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #E03B53 text on white | 4.26:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #E03B53 text on black | 4.91:1 | AA | Lc -33.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FBCBCC
oklch(88.4% 0.055 16.8)
-
Step 300
300
#F9A7A9
oklch(80.9% 0.097 17.8)
-
Step 400
400
#F2737B
oklch(70.7% 0.156 18.1)
-
Step 500
500 (this color)
#E03B53
oklch(60.6% 0.2 17.8)
-
Step 600
600
#D40E40
oklch(55.5% 0.217 17.8)
-
Step 700
700
#B50034
oklch(49% 0.196 17.6)
-
Step 800
800
#95062A
oklch(42.7% 0.168 17.8)
-
Step 900
900
#781626
oklch(37.8% 0.131 17.9)
-
Step 950
950
#471017
oklch(27.1% 0.083 17.5)
#E03B53 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) | #696453 | 0.221 |
| Deuteranopia (no green cones) | #93874E | 0.202 |
| Tritanopia (no blue cones) | #F50045 | 0.047 |
| Achromatopsia (no color) | #7A7A7A | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E03B53
#E03B53
oklch(60.6% 0.2 17.8)
- #009498
#009498
oklch(60.5% 0.103 198.2)
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 #E03B53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.019
- Faded Red #D3494E ΔE 0.031
- Red Pantone #EF233C ΔE 0.037
- Crimson #DC143C ΔE 0.042
- Pale Red #D9544D ΔE 0.044
- Dark Coral #CF524E ΔE 0.046
- Pastel Red #DB5856 ΔE 0.047
- Pink Red #F5054F ΔE 0.047
Use #E03B53 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.