#E42417
Closest named color: Tomato Red (#EC2D01). oklch(59% 0.225 29.6), rgb(228, 36, 23).
Aa
White text reads best on this color (4.60:1).
About this color
#E42417 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.225 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.022 away. White text reads best on it, at 4.60:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.225) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #E42417 |
| RGB | rgb(228, 36, 23) |
| HSL | hsl(4, 82%, 49%) |
| OKLCH | oklch(59% 0.225 29.6) |
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 #E42417 | 4.60:1 | AA | Lc -75.4 | Fine for body text |
| Black text on #E42417 | 4.56:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #E42417 text on white | 4.60:1 | AA | Lc 69.9 | Content text, not long reading |
| #E42417 text on black | 4.56:1 | AA | Lc -31.8 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89A
oklch(80.9% 0.101 30)
-
Step 400
400
#F57462
oklch(70.8% 0.162 29.8)
-
Step 500
500
#EC4534
oklch(63.1% 0.206 29.7)
-
Step 600
600 (this color)
#E42417
oklch(59% 0.225 29.6)
-
Step 700
700
#B70500
oklch(49.1% 0.199 29.6)
-
Step 800
800
#970400
oklch(42.6% 0.173 29.6)
-
Step 900
900
#79160E
oklch(37.6% 0.135 29.6)
-
Step 950
950
#48100A
oklch(27.1% 0.086 29.8)
#E42417 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) | #675B10 | 0.243 |
| Deuteranopia (no green cones) | #948400 | 0.220 |
| Tritanopia (no blue cones) | #FC0025 | 0.047 |
| Achromatopsia (no color) | #757575 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E42417
#E42417
oklch(59% 0.225 29.6)
- #008D9E
#008D9E
oklch(58.9% 0.102 209.6)
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 #E42417, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.022
- Red Pantone #EF233C ΔE 0.036
- Vermillion #F4320C ΔE 0.039
- Imperial Red #E63946 ΔE 0.039
- Cherry Red #F7022A ΔE 0.040
- Crimson #DC143C ΔE 0.041
- Fire Engine Red #FE0002 ΔE 0.049
- Red #FF0000 ΔE 0.051
Use #E42417 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.