#E23B31
Closest named color: Imperial Red (#E63946). oklch(60.4% 0.205 28.4), rgb(226, 59, 49).
Aa
Black text reads best on this color (4.90:1).
About this color
#E23B31 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.205 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.024 away. Black text reads best on it, at 4.90:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #E23B31 |
| RGB | rgb(226, 59, 49) |
| HSL | hsl(3, 75%, 54%) |
| OKLCH | oklch(60.4% 0.205 28.4) |
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 #E23B31 | 4.28:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #E23B31 | 4.90:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #E23B31 text on white | 4.28:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #E23B31 text on black | 4.90:1 | AA | Lc -33.5 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FBA89C
oklch(81% 0.1 28.5)
-
Step 400
400
#F47465
oklch(70.7% 0.16 28.6)
-
Step 500
500 (this color)
#E23B31
oklch(60.4% 0.205 28.4)
-
Step 600
600
#D70D11
oklch(55.6% 0.223 28.4)
-
Step 700
700
#B80007
oklch(49.2% 0.201 28.4)
-
Step 800
800
#970508
oklch(42.7% 0.172 28.3)
-
Step 900
900
#791712
oklch(37.7% 0.133 28.4)
-
Step 950
950
#47100C
oklch(26.9% 0.084 28.3)
#E23B31 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) | #6E632E | 0.219 |
| Deuteranopia (no green cones) | #978729 | 0.200 |
| Tritanopia (no blue cones) | #F9003B | 0.054 |
| Achromatopsia (no color) | #7A7A7A | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E23B31
#E23B31
oklch(60.4% 0.205 28.4)
- #0092A2
#0092A2
oklch(60.4% 0.104 208.4)
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 #E23B31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.024
- Tomato Red #EC2D01 ΔE 0.028
- Red Pantone #EF233C ΔE 0.035
- Vermillion #F4320C ΔE 0.037
- Faded Red #D3494E ΔE 0.038
- Pale Red #D9544D ΔE 0.040
- Deep Orange #DC4D01 ΔE 0.043
- Dark Coral #CF524E ΔE 0.047
Use #E23B31 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.