#E51F4D
Closest named color: Crimson (#DC143C). oklch(59.5% 0.224 16.6), rgb(229, 31, 77).
Aa
Black text reads best on this color (4.63:1).
About this color
#E51F4D is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.224 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.027 away. Black text reads best on it, at 4.63:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.224) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.63:1 |
| White text | 4.53:1 |
Values
| HEX | #E51F4D |
| RGB | rgb(229, 31, 77) |
| HSL | hsl(346, 79%, 51%) |
| OKLCH | oklch(59.5% 0.224 16.6) |
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 #E51F4D | 4.53:1 | AA | Lc -74.9 | Content text, not long reading |
| Black text on #E51F4D | 4.63:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #E51F4D text on white | 4.53:1 | AA | Lc 69.4 | Content text, not long reading |
| #E51F4D text on black | 4.63:1 | AA | Lc -32.3 | 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FFE2E2
oklch(93.6% 0.032 17.7)
-
Step 200
200
#FFCACB
oklch(88.6% 0.06 17.1)
-
Step 300
300
#FFA3A8
oklch(80.8% 0.109 16.2)
-
Step 400
400
#FA6B79
oklch(70.7% 0.175 16.8)
-
Step 500
500 (this color)
#E51F4D
oklch(59.5% 0.224 16.6)
-
Step 600
600
#D60042
oklch(55.6% 0.222 16.7)
-
Step 700
700
#B50037
oklch(49.1% 0.196 16.5)
-
Step 800
800
#96002C
oklch(42.7% 0.171 16.5)
-
Step 900
900
#7D0625
oklch(37.8% 0.147 16.4)
-
Step 950
950
#4A0A16
oklch(27% 0.093 16.3)
#E51F4D 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) | #615C4D | 0.250 |
| Deuteranopia (no green cones) | #918447 | 0.227 |
| Tritanopia (no blue cones) | #FC0035 | 0.049 |
| Achromatopsia (no color) | #767676 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E51F4D
#E51F4D
oklch(59.5% 0.224 16.6)
- #009193
#009193
oklch(59.5% 0.101 196.5)
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 #E51F4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.027
- Red Pantone #EF233C ΔE 0.030
- Pink Red #F5054F ΔE 0.030
- Imperial Red #E63946 ΔE 0.032
- Lipstick #D5174E ΔE 0.035
- Cerise #DE0C62 ΔE 0.040
- Red Pink #FA2A55 ΔE 0.046
- Cherry Red #F7022A ΔE 0.047
Use #E51F4D 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.