#E73D07
Closest named color: Tomato Red (#EC2D01). oklch(61.2% 0.213 34.8), rgb(231, 61, 7).
Aa
Black text reads best on this color (5.06:1).
About this color
#E73D07 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.213 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.018 away. Black text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.213) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #E73D07 |
| RGB | rgb(231, 61, 7) |
| HSL | hsl(14, 94%, 47%) |
| OKLCH | oklch(61.2% 0.213 34.8) |
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 #E73D07 | 4.14:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #E73D07 | 5.06:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #E73D07 text on white | 4.14:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #E73D07 text on black | 5.06:1 | AA | Lc -34.7 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FDE3DD
oklch(93.5% 0.03 33.1)
-
Step 200
200
#FDCCC0
oklch(88.5% 0.058 34.1)
-
Step 300
300
#FCA893
oklch(80.9% 0.104 34.7)
-
Step 400
400
#F67455
oklch(70.7% 0.167 34.7)
-
Step 500
500 (this color)
#E73D07
oklch(61.2% 0.213 34.8)
-
Step 600
600
#CC3300
oklch(55.6% 0.195 34.9)
-
Step 700
700
#AD2900
oklch(49.1% 0.173 34.7)
-
Step 800
800
#8F2000
oklch(42.7% 0.151 34.7)
-
Step 900
900
#781A00
oklch(37.7% 0.132 34.9)
-
Step 950
950
#481003
oklch(27% 0.088 35.2)
#E73D07 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) | #736400 | 0.221 |
| Deuteranopia (no green cones) | #9C8A00 | 0.199 |
| Tritanopia (no blue cones) | #FF0036 | 0.066 |
| Achromatopsia (no color) | #7D7D7D | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E73D07
#E73D07
oklch(61.2% 0.213 34.8)
- #0094AC
#0094AC
oklch(61.3% 0.108 214.5)
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 #E73D07, closest first.
No curated palette has a color within ΔE 0.04 of #E73D07.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.018
- Vermillion #F4320C ΔE 0.026
- Deep Orange #DC4D01 ΔE 0.029
- Orangey Red #FA4224 ΔE 0.041
- Red Orange #FD3C06 ΔE 0.043
- Imperial Red #E63946 ΔE 0.046
- Orangered #FE420F ΔE 0.047
- Red Pantone #EF233C ΔE 0.051
Use #E73D07 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.