#E73A3A
Closest named color: Imperial Red (#E63946). oklch(61.3% 0.21 25.9), rgb(231, 58, 58).
Aa
Black text reads best on this color (5.06:1).
About this color
#E73A3A is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.210 and its hue 26°. 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 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #E73A3A |
| RGB | rgb(231, 58, 58) |
| HSL | hsl(0, 78%, 57%) |
| OKLCH | oklch(61.3% 0.21 25.9) |
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 #E73A3A | 4.14:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #E73A3A | 5.06:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #E73A3A text on white | 4.14:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #E73A3A text on black | 5.06:1 | AA | Lc -34.6 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FDCBC6
oklch(88.4% 0.057 24.9)
-
Step 300
300
#FCA79E
oklch(80.9% 0.102 26.2)
-
Step 400
400
#F67269
oklch(70.8% 0.164 26)
-
Step 500
500 (this color)
#E73A3A
oklch(61.3% 0.21 25.9)
-
Step 600
600
#D8001E
oklch(55.5% 0.226 25.9)
-
Step 700
700
#B70018
oklch(49.1% 0.199 25.9)
-
Step 800
800
#980012
oklch(42.8% 0.174 25.9)
-
Step 900
900
#7A1316
oklch(37.6% 0.137 25.7)
-
Step 950
950
#480F0E
oklch(27% 0.086 25.9)
#E73A3A 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) | #6F6538 | 0.226 |
| Deuteranopia (no green cones) | #998A33 | 0.207 |
| Tritanopia (no blue cones) | #FE003C | 0.050 |
| Achromatopsia (no color) | #7C7C7C | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E73A3A
#E73A3A
oklch(61.3% 0.21 25.9)
- #0095A3
#0095A3
oklch(61.2% 0.105 206.5)
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 #E73A3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.014
- Red Pantone #EF233C ΔE 0.025
- Tomato Red #EC2D01 ΔE 0.031
- Vermillion #F4320C ΔE 0.035
- Cherry Red #F7022A ΔE 0.040
- Strawberry #FB2943 ΔE 0.040
- Faded Red #D3494E ΔE 0.041
- Pale Red #D9544D ΔE 0.041
Use #E73A3A 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.