#E3420B
Closest named color: Deep Orange (#DC4D01). oklch(61% 0.205 35.9), rgb(227, 66, 11).
Aa
Black text reads best on this color (5.05:1).
About this color
#E3420B is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.205 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.021 away. Black text reads best on it, at 5.05:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #E3420B |
| RGB | rgb(227, 66, 11) |
| HSL | hsl(15, 91%, 47%) |
| OKLCH | oklch(61% 0.205 35.9) |
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 #E3420B | 4.15:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #E3420B | 5.05:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #E3420B text on white | 4.15:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #E3420B text on black | 5.05:1 | AA | Lc -34.4 | 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
#FAA994
oklch(80.8% 0.101 35.2)
-
Step 400
400
#F37756
oklch(70.8% 0.16 35.9)
-
Step 500
500 (this color)
#E3420B
oklch(61% 0.205 35.9)
-
Step 600
600
#CA3700
oklch(55.6% 0.191 36)
-
Step 700
700
#AB2D00
oklch(49.1% 0.169 35.9)
-
Step 800
800
#8D2300
oklch(42.6% 0.147 35.8)
-
Step 900
900
#771C00
oklch(37.7% 0.13 35.8)
-
Step 950
950
#471204
oklch(27% 0.084 36.1)
#E3420B 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) | #746500 | 0.211 |
| Deuteranopia (no green cones) | #9B8900 | 0.190 |
| Tritanopia (no blue cones) | #FA003A | 0.072 |
| Achromatopsia (no color) | #7C7C7C | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3420B
#E3420B
oklch(61% 0.205 35.9)
- #0093AC
#0093AC
oklch(61.1% 0.108 215.4)
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 #E3420B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.021
- Tomato Red #EC2D01 ΔE 0.026
- Vermillion #F4320C ΔE 0.034
- Orangey Red #FA4224 ΔE 0.047
- Red Orange #FD3C06 ΔE 0.049
- Pale Red #D9544D ΔE 0.049
- Imperial Red #E63946 ΔE 0.049
- Rusty Orange #CD5909 ΔE 0.052
Use #E3420B 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.