#EF404B
Closest named color: Imperial Red (#E63946). oklch(63.4% 0.211 22.4), rgb(239, 64, 75).
Aa
Black text reads best on this color (5.50:1).
About this color
#EF404B is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.211 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.022 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 | Imperial Red (#E63946) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #EF404B |
| RGB | rgb(239, 64, 75) |
| HSL | hsl(356, 85%, 59%) |
| OKLCH | oklch(63.4% 0.211 22.4) |
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 #EF404B | 3.81:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #EF404B | 5.50:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #EF404B text on white | 3.81:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #EF404B 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FDCBC8
oklch(88.5% 0.057 22.3)
-
Step 300
300
#FCA6A2
oklch(80.9% 0.103 22.5)
-
Step 400
400
#F67070
oklch(70.6% 0.165 22.2)
-
Step 500
500 (this color)
#EF404B
oklch(63.4% 0.211 22.4)
-
Step 600
600
#D8002E
oklch(55.7% 0.225 22.6)
-
Step 700
700
#B60026
oklch(49% 0.198 22.3)
-
Step 800
800
#97001D
oklch(42.7% 0.172 22.6)
-
Step 900
900
#7A121C
oklch(37.7% 0.137 22.7)
-
Step 950
950
#480E11
oklch(26.9% 0.087 22.6)
#EF404B 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) | #736B4A | 0.229 |
| Deuteranopia (no green cones) | #9F9045 | 0.210 |
| Tritanopia (no blue cones) | #FF0046 | 0.045 |
| Achromatopsia (no color) | #838383 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF404B
#EF404B
oklch(63.4% 0.211 22.4)
- #009DA7
#009DA7
oklch(63.4% 0.108 202.8)
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 #EF404B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.022
- Strawberry #FB2943 ΔE 0.028
- Red Pantone #EF233C ΔE 0.030
- Pinky Red #FC2647 ΔE 0.031
- Watermelon #FD4659 ΔE 0.033
- Red Pink #FA2A55 ΔE 0.033
- Light Red #FF474C ΔE 0.035
- Orangey Red #FA4224 ΔE 0.042
Use #EF404B 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.