#ED3906
Closest named color: Tomato Red (#EC2D01). oklch(61.9% 0.221 33.8), rgb(237, 57, 6).
Aa
Black text reads best on this color (5.18:1).
About this color
#ED3906 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.221 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.014 away. Black text reads best on it, at 5.18:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.221) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #ED3906 |
| RGB | rgb(237, 57, 6) |
| HSL | hsl(13, 95%, 48%) |
| OKLCH | oklch(61.9% 0.221 33.8) |
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 #ED3906 | 4.04:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #ED3906 | 5.18:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #ED3906 text on white | 4.04:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #ED3906 text on black | 5.18:1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DC
oklch(93.6% 0.031 34.9)
-
Step 200
200
#FECCBF
oklch(88.5% 0.06 35)
-
Step 300
300
#FEA792
oklch(80.9% 0.108 34.2)
-
Step 400
400
#F97153
oklch(70.7% 0.173 33.9)
-
Step 500
500 (this color)
#ED3906
oklch(61.9% 0.221 33.8)
-
Step 600
600
#CE2E00
oklch(55.5% 0.201 33.8)
-
Step 700
700
#AF2600
oklch(49.2% 0.178 33.9)
-
Step 800
800
#901D00
oklch(42.6% 0.154 33.8)
-
Step 900
900
#7A1700
oklch(37.8% 0.137 33.8)
-
Step 950
950
#490E03
oklch(26.9% 0.091 33.7)
#ED3906 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) | #736500 | 0.233 |
| Deuteranopia (no green cones) | #9F8D00 | 0.209 |
| Tritanopia (no blue cones) | #FF0033 | 0.055 |
| Achromatopsia (no color) | #7E7E7E | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ED3906
#ED3906
oklch(61.9% 0.221 33.8)
- #0096AE
#0096AE
oklch(61.9% 0.109 214.3)
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 #ED3906, closest first.
No curated palette has a color within ΔE 0.04 of #ED3906.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.014
- Vermillion #F4320C ΔE 0.014
- Orangey Red #FA4224 ΔE 0.032
- Red Orange #FD3C06 ΔE 0.033
- Orangered #FE420F ΔE 0.038
- Deep Orange #DC4D01 ΔE 0.039
- Fire Engine Red #FE0002 ΔE 0.041
- Red #FF0000 ΔE 0.042
Use #ED3906 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.