#E73A55
Closest named color: Imperial Red (#E63946). oklch(61.7% 0.208 17.5), rgb(231, 58, 85).
Aa
Black text reads best on this color (5.13:1).
About this color
#E73A55 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.208 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.018 away. Black text reads best on it, at 5.13:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.208) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #E73A55 |
| RGB | rgb(231, 58, 85) |
| HSL | hsl(351, 78%, 57%) |
| OKLCH | oklch(61.7% 0.208 17.5) |
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 #E73A55 | 4.09:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #E73A55 | 5.13:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #E73A55 text on white | 4.09:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #E73A55 text on black | 5.13:1 | AA | Lc -35.0 | 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FDE3E3
oklch(93.7% 0.029 17.7)
-
Step 200
200
#FCCBCB
oklch(88.5% 0.056 18.3)
-
Step 300
300
#FBA6A8
oklch(80.9% 0.101 18)
-
Step 400
400
#F5707B
oklch(70.7% 0.163 17.2)
-
Step 500
500 (this color)
#E73A55
oklch(61.7% 0.208 17.5)
-
Step 600
600
#D60040
oklch(55.6% 0.222 17.4)
-
Step 700
700
#B50034
oklch(49% 0.196 17.6)
-
Step 800
800
#96002A
oklch(42.7% 0.171 17.4)
-
Step 900
900
#791225
oklch(37.6% 0.136 17.6)
-
Step 950
950
#480E16
oklch(27% 0.087 17.7)
#E73A55 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) | #6B6655 | 0.230 |
| Deuteranopia (no green cones) | #978B50 | 0.211 |
| Tritanopia (no blue cones) | #FD0046 | 0.047 |
| Achromatopsia (no color) | #7D7D7D | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E73A55
#E73A55
oklch(61.7% 0.208 17.5)
- #00989C
#00989C
oklch(61.7% 0.105 198.1)
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 #E73A55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.018
- Red Pantone #EF233C ΔE 0.031
- Red Pink #FA2A55 ΔE 0.036
- Pink Red #F5054F ΔE 0.038
- Paradise Pink #EF476F ΔE 0.038
- Strawberry #FB2943 ΔE 0.041
- Pinky Red #FC2647 ΔE 0.041
- Faded Red #D3494E ΔE 0.042
Use #E73A55 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.