#EF4234
Closest named color: Orangey Red (#FA4224). oklch(63.3% 0.212 29.1), rgb(239, 66, 52).
Aa
Black text reads best on this color (5.49:1).
About this color
#EF4234 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.212 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.024 away. Black text reads best on it, at 5.49:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.212) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.49:1 |
| White text | 3.81:1 |
Values
| HEX | #EF4234 |
| RGB | rgb(239, 66, 52) |
| HSL | hsl(4, 85%, 57%) |
| OKLCH | oklch(63.3% 0.212 29.1) |
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 #EF4234 | 3.81:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #EF4234 | 5.49:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #EF4234 text on white | 3.81:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #EF4234 text on black | 5.49:1 | AA | Lc -37.4 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FDCCC4
oklch(88.6% 0.057 29)
-
Step 300
300
#FCA79A
oklch(80.9% 0.103 29)
-
Step 400
400
#F67262
oklch(70.6% 0.165 28.9)
-
Step 500
500 (this color)
#EF4234
oklch(63.3% 0.212 29.1)
-
Step 600
600
#D90002
oklch(55.6% 0.228 29.1)
-
Step 700
700
#B80001
oklch(49.1% 0.202 29.1)
-
Step 800
800
#980001
oklch(42.7% 0.175 29.1)
-
Step 900
900
#7A140D
oklch(37.6% 0.137 29.3)
-
Step 950
950
#480F0A
oklch(26.9% 0.087 29.1)
#EF4234 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) | #766A31 | 0.226 |
| Deuteranopia (no green cones) | #A1902C | 0.205 |
| Tritanopia (no blue cones) | #FF0041 | 0.055 |
| Achromatopsia (no color) | #828282 | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF4234
#EF4234
oklch(63.3% 0.212 29.1)
- #009CAE
#009CAE
oklch(63.4% 0.109 209.1)
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 #EF4234, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.024
- Vermillion #F4320C ΔE 0.024
- Tomato Red #EC2D01 ΔE 0.032
- Red Orange #FD3C06 ΔE 0.032
- Imperial Red #E63946 ΔE 0.033
- Orangered #FE420F ΔE 0.035
- Red Pantone #EF233C ΔE 0.038
- Strawberry #FB2943 ΔE 0.038
Use #EF4234 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.