#E3403D
Closest named color: Imperial Red (#E63946). oklch(61.2% 0.2 26.2), rgb(227, 64, 61).
Aa
Black text reads best on this color (5.06:1).
About this color
#E3403D is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.200 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.016 away. Black text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #E3403D |
| RGB | rgb(227, 64, 61) |
| HSL | hsl(1, 75%, 56%) |
| OKLCH | oklch(61.2% 0.2 26.2) |
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 #E3403D | 4.14:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #E3403D | 5.06:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #E3403D text on white | 4.14:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #E3403D text on black | 5.06:1 | AA | Lc -34.5 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#FAA89F
oklch(80.9% 0.099 26.3)
-
Step 400
400
#F3756B
oklch(70.8% 0.157 26.4)
-
Step 500
500 (this color)
#E3403D
oklch(61.2% 0.2 26.2)
-
Step 600
600
#D51522
oklch(55.5% 0.217 26.2)
-
Step 700
700
#B70016
oklch(49.1% 0.2 26.3)
-
Step 800
800
#960A14
oklch(42.8% 0.168 26.3)
-
Step 900
900
#781818
oklch(37.7% 0.131 26.2)
-
Step 950
950
#47110F
oklch(27.1% 0.083 26.4)
#E3403D 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) | #70663B | 0.215 |
| Deuteranopia (no green cones) | #988937 | 0.197 |
| Tritanopia (no blue cones) | #FA0041 | 0.056 |
| Achromatopsia (no color) | #7D7D7D | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3403D
#E3403D
oklch(61.2% 0.2 26.2)
- #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 #E3403D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.016
- Pale Red #D9544D ΔE 0.033
- Faded Red #D3494E ΔE 0.033
- Red Pantone #EF233C ΔE 0.034
- Tomato Red #EC2D01 ΔE 0.036
- Pastel Red #DB5856 ΔE 0.040
- Vermillion #F4320C ΔE 0.041
- Dark Coral #CF524E ΔE 0.042
Use #E3403D 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.