#E23A00
Closest named color: Tomato Red (#EC2D01). oklch(60.1% 0.211 35), rgb(226, 58, 0).
Aa
Black text reads best on this color (4.83:1).
About this color
#E23A00 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.211 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.021 away. Black text reads best on it, at 4.83:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.211) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.83:1 |
| White text | 4.33:1 |
Values
| HEX | #E23A00 |
| RGB | rgb(226, 58, 0) |
| HSL | hsl(15, 100%, 44%) |
| OKLCH | oklch(60.1% 0.211 35) |
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 #E23A00 | 4.33:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #E23A00 | 4.83:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #E23A00 text on white | 4.33:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #E23A00 text on black | 4.83:1 | AA | Lc -33.2 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FDE3DD
oklch(93.5% 0.03 33.1)
-
Step 200
200
#FCCCC0
oklch(88.4% 0.057 34.4)
-
Step 300
300
#FBA993
oklch(80.9% 0.102 35.7)
-
Step 400
400
#F57555
oklch(70.7% 0.165 35.2)
-
Step 500
500 (this color)
#E23A00
oklch(60.1% 0.211 35)
-
Step 600
600
#CC3300
oklch(55.6% 0.195 34.9)
-
Step 700
700
#AC2A00
oklch(49% 0.172 35)
-
Step 800
800
#8F2100
oklch(42.8% 0.15 35)
-
Step 900
900
#781A00
oklch(37.7% 0.132 34.9)
-
Step 950
950
#481004
oklch(27% 0.088 34.4)
#E23A00 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) | #6F6100 | 0.220 |
| Deuteranopia (no green cones) | #988700 | 0.197 |
| Tritanopia (no blue cones) | #F90033 | 0.064 |
| Achromatopsia (no color) | #797979 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E23A00
#E23A00
oklch(60.1% 0.211 35)
- #0090A8
#0090A8
oklch(60.1% 0.106 215)
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 #E23A00, closest first.
No curated palette has a color within ΔE 0.04 of #E23A00.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.021
- Deep Orange #DC4D01 ΔE 0.029
- Vermillion #F4320C ΔE 0.035
- Imperial Red #E63946 ΔE 0.048
- Orangey Red #FA4224 ΔE 0.053
- Red Pantone #EF233C ΔE 0.053
- Red Orange #FD3C06 ΔE 0.054
- Pale Red #D9544D ΔE 0.055
Use #E23A00 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.