#ED4239
Closest named color: Imperial Red (#E63946). oklch(63% 0.209 27.9), rgb(237, 66, 57).
Aa
Black text reads best on this color (5.43:1).
About this color
#ED4239 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.209 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.027 away. Black text reads best on it, at 5.43:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.209) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #ED4239 |
| RGB | rgb(237, 66, 57) |
| HSL | hsl(3, 83%, 58%) |
| OKLCH | oklch(63% 0.209 27.9) |
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 #ED4239 | 3.86:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #ED4239 | 5.43:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #ED4239 text on white | 3.86:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #ED4239 text on black | 5.43:1 | AA | Lc -37.0 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FDCCC5
oklch(88.6% 0.057 27.7)
-
Step 300
300
#FCA79C
oklch(80.9% 0.103 27.6)
-
Step 400
400
#F67265
oklch(70.7% 0.165 27.7)
-
Step 500
500 (this color)
#ED4239
oklch(63% 0.209 27.9)
-
Step 600
600
#D90010
oklch(55.6% 0.227 27.9)
-
Step 700
700
#B8000C
oklch(49.2% 0.201 27.9)
-
Step 800
800
#980008
oklch(42.7% 0.175 27.8)
-
Step 900
900
#7A1412
oklch(37.7% 0.137 27.6)
-
Step 950
950
#480F0C
oklch(27% 0.087 27.6)
#ED4239 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) | #756A36 | 0.224 |
| Deuteranopia (no green cones) | #9F8F32 | 0.204 |
| Tritanopia (no blue cones) | #FF0042 | 0.054 |
| Achromatopsia (no color) | #828282 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ED4239
#ED4239
oklch(63% 0.209 27.9)
- #009BAB
#009BAB
oklch(63% 0.108 207.7)
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 #ED4239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.027
- Vermillion #F4320C ΔE 0.028
- Orangey Red #FA4224 ΔE 0.029
- Tomato Red #EC2D01 ΔE 0.033
- Red Pantone #EF233C ΔE 0.035
- Strawberry #FB2943 ΔE 0.037
- Red Orange #FD3C06 ΔE 0.038
- Orangered #FE420F ΔE 0.041
Use #ED4239 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.