#E54243
Closest named color: Imperial Red (#E63946). oklch(61.8% 0.2 24.9), rgb(229, 66, 67).
Aa
Black text reads best on this color (5.19:1).
About this color
#E54243 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.200 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.014 away. Black text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #E54243 |
| RGB | rgb(229, 66, 67) |
| HSL | hsl(360, 76%, 58%) |
| OKLCH | oklch(61.8% 0.2 24.9) |
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 #E54243 | 4.04:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #E54243 | 5.19:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #E54243 text on white | 4.04:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #E54243 text on black | 5.19:1 | AA | Lc -35.3 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC7
oklch(88.5% 0.054 25.3)
-
Step 300
300
#FAA8A1
oklch(81% 0.098 24.8)
-
Step 400
400
#F2746E
oklch(70.6% 0.156 24.6)
-
Step 500
500 (this color)
#E54243
oklch(61.8% 0.2 24.9)
-
Step 600
600
#D51428
oklch(55.6% 0.217 24.9)
-
Step 700
700
#B7001C
oklch(49.1% 0.199 25)
-
Step 800
800
#950A19
oklch(42.6% 0.167 24.7)
-
Step 900
900
#78181A
oklch(37.7% 0.13 25.2)
-
Step 950
950
#471110
oklch(27.1% 0.083 25.5)
#E54243 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) | #716841 | 0.216 |
| Deuteranopia (no green cones) | #9A8B3E | 0.197 |
| Tritanopia (no blue cones) | #FC0044 | 0.056 |
| Achromatopsia (no color) | #7E7E7E | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E54243
#E54243
oklch(61.8% 0.2 24.9)
- #0097A4
#0097A4
oklch(61.7% 0.106 205.5)
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 #E54243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.014
- Pale Red #D9544D ΔE 0.032
- Red Pantone #EF233C ΔE 0.033
- Faded Red #D3494E ΔE 0.035
- Pastel Red #DB5856 ΔE 0.037
- Tomato Red #EC2D01 ΔE 0.041
- Vermillion #F4320C ΔE 0.042
- Dark Coral #CF524E ΔE 0.043
Use #E54243 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.