#E04523
Closest named color: Deep Orange (#DC4D01). oklch(60.9% 0.197 33.7), rgb(224, 69, 35).
Aa
Black text reads best on this color (5.04:1).
About this color
#E04523 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.197 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.023 away. Black text reads best on it, at 5.04:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.197) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #E04523 |
| RGB | rgb(224, 69, 35) |
| HSL | hsl(11, 75%, 51%) |
| OKLCH | oklch(60.9% 0.197 33.7) |
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 #E04523 | 4.16:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #E04523 | 5.04:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #E04523 text on white | 4.16:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #E04523 text on black | 5.04:1 | AA | Lc -34.3 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FCE4DE
oklch(93.7% 0.028 34.3)
-
Step 200
200
#FACDC2
oklch(88.4% 0.053 34)
-
Step 300
300
#F8AA98
oklch(80.9% 0.096 33.5)
-
Step 400
400
#F1785D
oklch(70.7% 0.155 33.9)
-
Step 500
500 (this color)
#E04523
oklch(60.9% 0.197 33.7)
-
Step 600
600
#CE2E00
oklch(55.5% 0.201 33.8)
-
Step 700
700
#AF2500
oklch(49.1% 0.178 33.7)
-
Step 800
800
#901D00
oklch(42.6% 0.154 33.8)
-
Step 900
900
#771C07
oklch(37.7% 0.129 33.7)
-
Step 950
950
#461308
oklch(27% 0.081 33.9)
#E04523 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) | #73661C | 0.206 |
| Deuteranopia (no green cones) | #9A891A | 0.186 |
| Tritanopia (no blue cones) | #F7003F | 0.072 |
| Achromatopsia (no color) | #7C7C7C | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E04523
#E04523
oklch(60.9% 0.197 33.7)
- #0093AA
#0093AA
oklch(61% 0.107 213.9)
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 #E04523, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.023
- Tomato Red #EC2D01 ΔE 0.031
- Pale Red #D9544D ΔE 0.039
- Vermillion #F4320C ΔE 0.039
- Imperial Red #E63946 ΔE 0.042
- Faded Red #D3494E ΔE 0.046
- Dark Coral #CF524E ΔE 0.047
- Pastel Red #DB5856 ΔE 0.049
Use #E04523 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.