#EF4C51
Closest named color: Watermelon (#FD4659). oklch(64.7% 0.199 23), rgb(239, 76, 81).
Aa
Black text reads best on this color (5.82:1).
About this color
#EF4C51 is a medium-light, vivid red. In OKLCH its lightness is 65%, its chroma 0.199 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Watermelon (#FD4659), ΔE 0.028 away. Black text reads best on it, at 5.82:1.
| Hue family | Reds |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.199) |
| Temperature | warm |
| Nearest name | Watermelon (#FD4659) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #EF4C51 |
| RGB | rgb(239, 76, 81) |
| HSL | hsl(358, 84%, 62%) |
| OKLCH | oklch(64.7% 0.199 23) |
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 #EF4C51 | 3.60:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #EF4C51 | 5.82:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #EF4C51 text on white | 3.60:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #EF4C51 text on black | 5.82:1 | AA | Lc -39.2 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F9A8A3
oklch(80.9% 0.097 23.3)
-
Step 400
400
#F27472
oklch(70.7% 0.156 22.8)
-
Step 500
500 (this color)
#EF4C51
oklch(64.7% 0.199 23)
-
Step 600
600
#D5142F
oklch(55.6% 0.217 23.2)
-
Step 700
700
#B70024
oklch(49.2% 0.198 23)
-
Step 800
800
#950A1E
oklch(42.7% 0.167 23.1)
-
Step 900
900
#78181E
oklch(37.8% 0.13 23.1)
-
Step 950
950
#471112
oklch(27.1% 0.082 23.5)
#EF4C51 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) | #797150 | 0.215 |
| Deuteranopia (no green cones) | #A2944C | 0.199 |
| Tritanopia (no blue cones) | #FF1C4F | 0.052 |
| Achromatopsia (no color) | #878787 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF4C51
#EF4C51
oklch(64.7% 0.199 23)
- #00A1AC
#00A1AC
oklch(64.6% 0.11 203.4)
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 #EF4C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Watermelon #FD4659 ΔE 0.028
- Light Red #FF474C ΔE 0.029
- Imperial Red #E63946 ΔE 0.036
- Grapefruit #FD5956 ΔE 0.038
- Pastel Red #DB5856 ΔE 0.038
- Strawberry #FB2943 ΔE 0.040
- Orangey Red #FA4224 ΔE 0.041
- Pale Red #D9544D ΔE 0.042
Use #EF4C51 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.