#E7403B
Closest named color: Imperial Red (#E63946). oklch(61.9% 0.205 26.9), rgb(231, 64, 59).
Aa
Black text reads best on this color (5.19:1).
About this color
#E7403B is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.205 and its hue 27°. 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 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #E7403B |
| RGB | rgb(231, 64, 59) |
| HSL | hsl(2, 78%, 57%) |
| OKLCH | oklch(61.9% 0.205 26.9) |
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 #E7403B | 4.04:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #E7403B | 5.19:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #E7403B text on white | 4.04:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #E7403B text on black | 5.19:1 | AA | Lc -35.4 | 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
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC6
oklch(88.5% 0.055 26.5)
-
Step 300
300
#FBA89E
oklch(81% 0.1 27)
-
Step 400
400
#F47469
oklch(70.8% 0.159 26.9)
-
Step 500
500 (this color)
#E7403B
oklch(61.9% 0.205 26.9)
-
Step 600
600
#D70C1B
oklch(55.6% 0.222 26.9)
-
Step 700
700
#B70013
oklch(49% 0.2 26.8)
-
Step 800
800
#970510
oklch(42.8% 0.171 26.8)
-
Step 900
900
#791615
oklch(37.7% 0.134 26.9)
-
Step 950
950
#47100E
oklch(26.9% 0.084 26.6)
#E7403B 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) | #726739 | 0.219 |
| Deuteranopia (no green cones) | #9B8C35 | 0.202 |
| Tritanopia (no blue cones) | #FE0041 | 0.056 |
| Achromatopsia (no color) | #7E7E7E | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E7403B
#E7403B
oklch(61.9% 0.205 26.9)
- #0097A6
#0097A6
oklch(61.8% 0.106 207.2)
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 #E7403B, 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 0.032
- Tomato Red #EC2D01 ΔE 0.033
- Vermillion #F4320C ΔE 0.034
- Pale Red #D9544D ΔE 0.036
- Faded Red #D3494E ΔE 0.041
- Orangey Red #FA4224 ΔE 0.042
- Pastel Red #DB5856 ΔE 0.042
Use #E7403B 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.