#E53E1C
Closest named color: Tomato Red (#EC2D01). oklch(61.1% 0.208 33), rgb(229, 62, 28).
Aa
Black text reads best on this color (5.03:1).
About this color
#E53E1C is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.208 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.020 away. Black text reads best on it, at 5.03:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.208) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #E53E1C |
| RGB | rgb(229, 62, 28) |
| HSL | hsl(10, 79%, 50%) |
| OKLCH | oklch(61.1% 0.208 33) |
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 #E53E1C | 4.16:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #E53E1C | 5.03:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #E53E1C text on white | 4.16:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #E53E1C text on black | 5.03:1 | AA | Lc -34.4 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DD
oklch(93.5% 0.03 33.1)
-
Step 200
200
#FCCCC1
oklch(88.4% 0.057 33.1)
-
Step 300
300
#FBA896
oklch(80.8% 0.102 32.8)
-
Step 400
400
#F5755A
oklch(70.8% 0.163 33.4)
-
Step 500
500 (this color)
#E53E1C
oklch(61.1% 0.208 33)
-
Step 600
600
#D02A00
oklch(55.6% 0.205 33)
-
Step 700
700
#B02200
oklch(49.1% 0.181 33)
-
Step 800
800
#921A00
oklch(42.8% 0.158 32.9)
-
Step 900
900
#791703
oklch(37.6% 0.135 33)
-
Step 950
950
#481006
oklch(27% 0.087 32.8)
#E53E1C 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) | #726414 | 0.219 |
| Deuteranopia (no green cones) | #9B8A0D | 0.199 |
| Tritanopia (no blue cones) | #FD0039 | 0.064 |
| Achromatopsia (no color) | #7C7C7C | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E53E1C
#E53E1C
oklch(61.1% 0.208 33)
- #0093A9
#0093A9
oklch(60.9% 0.107 213.1)
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 #E53E1C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.020
- Vermillion #F4320C ΔE 0.028
- Deep Orange #DC4D01 ΔE 0.031
- Imperial Red #E63946 ΔE 0.039
- Orangey Red #FA4224 ΔE 0.043
- Red Pantone #EF233C ΔE 0.046
- Red Orange #FD3C06 ΔE 0.046
- Pale Red #D9544D ΔE 0.047
Use #E53E1C 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.