#E5403A
Closest named color: Imperial Red (#E63946). oklch(61.5% 0.203 27.1), rgb(229, 64, 58).
Aa
Black text reads best on this color (5.12:1).
About this color
#E5403A is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.203 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.019 away. Black text reads best on it, at 5.12:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.203) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #E5403A |
| RGB | rgb(229, 64, 58) |
| HSL | hsl(2, 77%, 56%) |
| OKLCH | oklch(61.5% 0.203 27.1) |
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 #E5403A | 4.09:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #E5403A | 5.12:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #E5403A text on white | 4.09:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #E5403A text on black | 5.12:1 | AA | Lc -34.9 | 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
#FAA89E
oklch(80.9% 0.099 27.1)
-
Step 400
400
#F37469
oklch(70.6% 0.158 26.9)
-
Step 500
500 (this color)
#E5403A
oklch(61.5% 0.203 27.1)
-
Step 600
600
#D6111C
oklch(55.6% 0.22 27)
-
Step 700
700
#B70011
oklch(49% 0.2 27.1)
-
Step 800
800
#960810
oklch(42.7% 0.169 27)
-
Step 900
900
#791715
oklch(37.8% 0.133 27.2)
-
Step 950
950
#47100E
oklch(26.9% 0.084 26.6)
#E5403A 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) | #716638 | 0.217 |
| Deuteranopia (no green cones) | #9A8A34 | 0.198 |
| Tritanopia (no blue cones) | #FC0040 | 0.057 |
| Achromatopsia (no color) | #7D7D7D | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E5403A
#E5403A
oklch(61.5% 0.203 27.1)
- #0096A5
#0096A5
oklch(61.5% 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 #E5403A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.019
- Tomato Red #EC2D01 ΔE 0.033
- Red Pantone #EF233C ΔE 0.033
- Pale Red #D9544D ΔE 0.035
- Vermillion #F4320C ΔE 0.036
- Faded Red #D3494E ΔE 0.038
- Pastel Red #DB5856 ΔE 0.042
- Orangey Red #FA4224 ΔE 0.045
Use #E5403A 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.