#EF402C
Closest named color: Vermillion (#F4320C). oklch(63.1% 0.214 30.4), rgb(239, 64, 44).
Aa
Black text reads best on this color (5.43:1).
About this color
#EF402C is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.214 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.019 away. Black text reads best on it, at 5.43:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #EF402C |
| RGB | rgb(239, 64, 44) |
| HSL | hsl(6, 86%, 55%) |
| OKLCH | oklch(63.1% 0.214 30.4) |
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 #EF402C | 3.86:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #EF402C | 5.43:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #EF402C text on white | 3.86:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #EF402C text on black | 5.43:1 | AA | Lc -37.1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FDCCC2
oklch(88.5% 0.058 31.6)
-
Step 300
300
#FDA798
oklch(80.9% 0.105 30.3)
-
Step 400
400
#F7725E
oklch(70.7% 0.167 30.4)
-
Step 500
500 (this color)
#EF402C
oklch(63.1% 0.214 30.4)
-
Step 600
600
#D61500
oklch(55.6% 0.221 30.4)
-
Step 700
700
#B51000
oklch(49% 0.195 30.4)
-
Step 800
800
#960B00
oklch(42.7% 0.17 30.3)
-
Step 900
900
#7B1308
oklch(37.7% 0.139 30.4)
-
Step 950
950
#490F08
oklch(27.1% 0.089 30.5)
#EF402C 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) | #766927 | 0.227 |
| Deuteranopia (no green cones) | #A19023 | 0.207 |
| Tritanopia (no blue cones) | #FF003D | 0.054 |
| Achromatopsia (no color) | #828282 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF402C
#EF402C
oklch(63.1% 0.214 30.4)
- #009BAE
#009BAE
oklch(63.2% 0.109 210)
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 #EF402C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.019
- Orangey Red #FA4224 ΔE 0.023
- Tomato Red #EC2D01 ΔE 0.027
- Red Orange #FD3C06 ΔE 0.030
- Orangered #FE420F ΔE 0.033
- Imperial Red #E63946 ΔE 0.036
- Orange Red #FF4500 ΔE 0.038
- Red Pantone #EF233C ΔE 0.039
Use #EF402C 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.