#E04E21
Closest named color: Deep Orange (#DC4D01). oklch(61.9% 0.19 36.6), rgb(224, 78, 33).
Aa
Black text reads best on this color (5.28:1).
About this color
#E04E21 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.190 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.015 away. Black text reads best on it, at 5.28:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.190) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #E04E21 |
| RGB | rgb(224, 78, 33) |
| HSL | hsl(14, 75%, 50%) |
| OKLCH | oklch(61.9% 0.19 36.6) |
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 #E04E21 | 3.97:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #E04E21 | 5.28:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #E04E21 text on white | 3.97:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #E04E21 text on black | 5.28:1 | AA | Lc -35.7 | 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
#FBE4DE
oklch(93.6% 0.027 35)
-
Step 200
200
#F9CEC2
oklch(88.5% 0.052 36.1)
-
Step 300
300
#F6AC96
oklch(81% 0.093 37.3)
-
Step 400
400
#EE7B5B
oklch(70.7% 0.149 36.5)
-
Step 500
500 (this color)
#E04E21
oklch(61.9% 0.19 36.6)
-
Step 600
600
#C93900
oklch(55.6% 0.188 36.5)
-
Step 700
700
#AA2F00
oklch(49.1% 0.166 36.6)
-
Step 800
800
#8C2500
oklch(42.6% 0.144 36.6)
-
Step 900
900
#752003
oklch(37.8% 0.124 36.8)
-
Step 950
950
#451406
oklch(27% 0.079 36.6)
#E04E21 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) | #796B19 | 0.193 |
| Deuteranopia (no green cones) | #9D8C18 | 0.176 |
| Tritanopia (no blue cones) | #F72046 | 0.078 |
| Achromatopsia (no color) | #808080 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E04E21
#E04E21
oklch(61.9% 0.19 36.6)
- #0096B1
#0096B1
oklch(62% 0.111 216.5)
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 #E04E21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.015
- Pale Red #D9544D ΔE 0.039
- Rusty Orange #CD5909 ΔE 0.042
- Tomato Red #EC2D01 ΔE 0.042
- Vermillion #F4320C ΔE 0.045
- Pastel Red #DB5856 ΔE 0.047
- Orangey Red #FA4224 ΔE 0.049
- Dark Coral #CF524E ΔE 0.050
Use #E04E21 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.