#E42700
Closest named color: Tomato Red (#EC2D01). oklch(59% 0.224 31.9), rgb(228, 39, 0).
Aa
Black text reads best on this color (4.58:1).
About this color
#E42700 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.224 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.019 away. Black text reads best on it, at 4.58:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.224) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.58:1 |
| White text | 4.57:1 |
Values
| HEX | #E42700 |
| RGB | rgb(228, 39, 0) |
| HSL | hsl(10, 100%, 45%) |
| OKLCH | oklch(59% 0.224 31.9) |
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 #E42700 | 4.57:1 | AA | Lc -75.2 | Fine for body text |
| Black text on #E42700 | 4.58:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #E42700 text on white | 4.57:1 | AA | Lc 69.7 | Content text, not long reading |
| #E42700 text on black | 4.58:1 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FCCCC2
oklch(88.4% 0.056 31.8)
-
Step 300
300
#FBA898
oklch(80.9% 0.102 31.4)
-
Step 400
400
#F4755E
oklch(70.7% 0.161 31.9)
-
Step 500
500
#EC462B
oklch(63.1% 0.207 31.9)
-
Step 600
600 (this color)
#E42700
oklch(59% 0.224 31.9)
-
Step 700
700
#B21C00
oklch(49.1% 0.187 31.9)
-
Step 800
800
#931500
oklch(42.6% 0.162 31.8)
-
Step 900
900
#791707
oklch(37.6% 0.135 31.9)
-
Step 950
950
#471108
oklch(27% 0.084 32.1)
#E42700 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) | #685B00 | 0.241 |
| Deuteranopia (no green cones) | #958400 | 0.214 |
| Tritanopia (no blue cones) | #FC0024 | 0.051 |
| Achromatopsia (no color) | #757575 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E42700
#E42700
oklch(59% 0.224 31.9)
- #008DA1
#008DA1
oklch(59.1% 0.103 212.1)
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 #E42700, closest first.
No curated palette has a color within ΔE 0.04 of #E42700.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.019
- Vermillion #F4320C ΔE 0.037
- Red Pantone #EF233C ΔE 0.043
- Cherry Red #F7022A ΔE 0.045
- Imperial Red #E63946 ΔE 0.045
- Deep Orange #DC4D01 ΔE 0.049
- Fire Engine Red #FE0002 ΔE 0.050
- Crimson #DC143C ΔE 0.050
Use #E42700 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.