#E42529
Closest named color: Red Pantone (#EF233C). oklch(59.1% 0.222 26.7), rgb(228, 37, 41).
Aa
Black text reads best on this color (4.59:1).
About this color
#E42529 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.222 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Red Pantone (#EF233C), ΔE 0.028 away. Black text reads best on it, at 4.59:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.222) |
| Temperature | warm |
| Nearest name | Red Pantone (#EF233C) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #E42529 |
| RGB | rgb(228, 37, 41) |
| HSL | hsl(359, 78%, 52%) |
| OKLCH | oklch(59.1% 0.222 26.7) |
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 #E42529 | 4.56:1 | AA | Lc -75.2 | Fine for body text |
| Black text on #E42529 | 4.59:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #E42529 text on white | 4.56:1 | AA | Lc 69.7 | Content text, not long reading |
| #E42529 text on black | 4.59:1 | AA | Lc -31.9 | 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 600.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC6
oklch(88.5% 0.055 26.5)
-
Step 300
300
#FBA89E
oklch(81% 0.1 27)
-
Step 400
400
#F47369
oklch(70.6% 0.161 26.4)
-
Step 500
500
#EC453F
oklch(63.2% 0.205 26.9)
-
Step 600
600 (this color)
#E42529
oklch(59.1% 0.222 26.7)
-
Step 700
700
#B70013
oklch(49% 0.2 26.8)
-
Step 800
800
#970510
oklch(42.8% 0.171 26.8)
-
Step 900
900
#791616
oklch(37.7% 0.134 26.5)
-
Step 950
950
#47100E
oklch(26.9% 0.084 26.6)
#E42529 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) | #665B26 | 0.243 |
| Deuteranopia (no green cones) | #94841E | 0.220 |
| Tritanopia (no blue cones) | #FB002A | 0.044 |
| Achromatopsia (no color) | #767676 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E42529
#E42529
oklch(59.1% 0.222 26.7)
- #008E9C
#008E9C
oklch(59.1% 0.101 207)
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 #E42529, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Pantone #EF233C ΔE 0.028
- Tomato Red #EC2D01 ΔE 0.029
- Imperial Red #E63946 ΔE 0.030
- Crimson #DC143C ΔE 0.033
- Cherry Red #F7022A ΔE 0.036
- Vermillion #F4320C ΔE 0.042
- Fire Engine Red #FE0002 ΔE 0.050
- Bright Red #FF000D ΔE 0.051
Use #E42529 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.