#E34304
Closest named color: Deep Orange (#DC4D01). oklch(61.1% 0.205 36.6), rgb(227, 67, 4).
Aa
Black text reads best on this color (5.07:1).
About this color
#E34304 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.205 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.019 away. Black text reads best on it, at 5.07:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.07:1 |
| White text | 4.14:1 |
Values
| HEX | #E34304 |
| RGB | rgb(227, 67, 4) |
| HSL | hsl(17, 97%, 45%) |
| OKLCH | oklch(61.1% 0.205 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 #E34304 | 4.14:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #E34304 | 5.07:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #E34304 text on white | 4.14:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #E34304 text on black | 5.07:1 | AA | Lc -34.6 | 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
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FCE4DD
oklch(93.6% 0.028 36.9)
-
Step 200
200
#FBCDC0
oklch(88.5% 0.055 36.3)
-
Step 300
300
#FAAA93
oklch(81% 0.1 36.7)
-
Step 400
400
#F37754
oklch(70.7% 0.161 36.6)
-
Step 500
500 (this color)
#E34304
oklch(61.1% 0.205 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
#761E00
oklch(37.7% 0.127 36.7)
-
Step 950
950
#471203
oklch(27% 0.085 36.9)
#E34304 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) | #746600 | 0.210 |
| Deuteranopia (no green cones) | #9C8A00 | 0.189 |
| Tritanopia (no blue cones) | #FA003A | 0.075 |
| Achromatopsia (no color) | #7D7D7D | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E34304
#E34304
oklch(61.1% 0.205 36.6)
- #0093AD
#0093AD
oklch(61.1% 0.109 216.1)
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 #E34304, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.019
- Tomato Red #EC2D01 ΔE 0.028
- Vermillion #F4320C ΔE 0.035
- Orangey Red #FA4224 ΔE 0.047
- Red Orange #FD3C06 ΔE 0.049
- Pale Red #D9544D ΔE 0.050
- Rusty Orange #CD5909 ΔE 0.051
- Imperial Red #E63946 ΔE 0.052
Use #E34304 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.