#EF4738
Closest named color: Orangey Red (#FA4224). oklch(63.8% 0.207 29.2), rgb(239, 71, 56).
Aa
Black text reads best on this color (5.62:1).
About this color
#EF4738 is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.207 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.023 away. Black text reads best on it, at 5.62:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.207) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #EF4738 |
| RGB | rgb(239, 71, 56) |
| HSL | hsl(5, 85%, 58%) |
| OKLCH | oklch(63.8% 0.207 29.2) |
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 #EF4738 | 3.73:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #EF4738 | 5.62:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #EF4738 text on white | 3.73:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #EF4738 text on black | 5.62:1 | AA | Lc -38.1 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89B
oklch(80.9% 0.101 29.2)
-
Step 400
400
#F57463
oklch(70.8% 0.162 29.4)
-
Step 500
500 (this color)
#EF4738
oklch(63.8% 0.207 29.2)
-
Step 600
600
#D80906
oklch(55.6% 0.225 29.2)
-
Step 700
700
#B80000
oklch(49.1% 0.202 29.2)
-
Step 800
800
#970302
oklch(42.6% 0.173 29.2)
-
Step 900
900
#79160F
oklch(37.6% 0.134 29.2)
-
Step 950
950
#48100B
oklch(27.1% 0.086 29)
#EF4738 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) | #796D35 | 0.219 |
| Deuteranopia (no green cones) | #A29231 | 0.202 |
| Tritanopia (no blue cones) | #FF0045 | 0.061 |
| Achromatopsia (no color) | #848484 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF4738
#EF4738
oklch(63.8% 0.207 29.2)
- #009DB0
#009DB0
oklch(63.8% 0.11 209.8)
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 #EF4738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.023
- Vermillion #F4320C ΔE 0.029
- Red Orange #FD3C06 ΔE 0.033
- Orangered #FE420F ΔE 0.034
- Imperial Red #E63946 ΔE 0.036
- Light Red #FF474C ΔE 0.037
- Tomato Red #EC2D01 ΔE 0.038
- Orange Red #FF4500 ΔE 0.039
Use #EF4738 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.