#EF4238
Closest named color: Orangey Red (#FA4224). oklch(63.4% 0.211 28.1), rgb(239, 66, 56).
Aa
Black text reads best on this color (5.50:1).
About this color
#EF4238 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.211 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.026 away. Black text reads best on it, at 5.50:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.211) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #EF4238 |
| RGB | rgb(239, 66, 56) |
| HSL | hsl(3, 85%, 58%) |
| OKLCH | oklch(63.4% 0.211 28.1) |
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 #EF4238 | 3.81:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #EF4238 | 5.50:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #EF4238 text on white | 3.81:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #EF4238 text on black | 5.50:1 | 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
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FDCCC4
oklch(88.6% 0.057 29)
-
Step 300
300
#FCA79B
oklch(80.9% 0.103 28.3)
-
Step 400
400
#F67264
oklch(70.7% 0.165 28.1)
-
Step 500
500 (this color)
#EF4238
oklch(63.4% 0.211 28.1)
-
Step 600
600
#D9000E
oklch(55.6% 0.227 28.1)
-
Step 700
700
#B8000A
oklch(49.2% 0.201 28.1)
-
Step 800
800
#980006
oklch(42.7% 0.175 28.2)
-
Step 900
900
#7A1310
oklch(37.6% 0.138 28.1)
-
Step 950
950
#480F0B
oklch(27% 0.087 28.4)
#EF4238 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) | #766B35 | 0.226 |
| Deuteranopia (no green cones) | #A19031 | 0.205 |
| Tritanopia (no blue cones) | #FF0042 | 0.053 |
| Achromatopsia (no color) | #838383 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF4238
#EF4238
oklch(63.4% 0.211 28.1)
- #009CAD
#009CAD
oklch(63.4% 0.109 208.4)
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 #EF4238, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.026
- Vermillion #F4320C ΔE 0.026
- Imperial Red #E63946 ΔE 0.030
- Tomato Red #EC2D01 ΔE 0.034
- Red Orange #FD3C06 ΔE 0.035
- Strawberry #FB2943 ΔE 0.036
- Red Pantone #EF233C ΔE 0.036
- Orangered #FE420F ΔE 0.037
Use #EF4238 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.