#E43A27
Closest named color: Tomato Red (#EC2D01). oklch(60.6% 0.209 30.4), rgb(228, 58, 39).
Aa
Black text reads best on this color (4.93:1).
About this color
#E43A27 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.209 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.020 away. Black text reads best on it, at 4.93:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.209) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #E43A27 |
| RGB | rgb(228, 58, 39) |
| HSL | hsl(6, 78%, 52%) |
| OKLCH | oklch(60.6% 0.209 30.4) |
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 #E43A27 | 4.25:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #E43A27 | 4.93:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #E43A27 text on white | 4.25:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #E43A27 text on black | 4.93:1 | AA | Lc -33.8 | 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 500.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FDCCC3
oklch(88.5% 0.057 30.3)
-
Step 300
300
#FCA899
oklch(81% 0.102 30.6)
-
Step 400
400
#F57360
oklch(70.6% 0.164 30.2)
-
Step 500
500 (this color)
#E43A27
oklch(60.6% 0.209 30.4)
-
Step 600
600
#D61500
oklch(55.6% 0.221 30.4)
-
Step 700
700
#B51000
oklch(49% 0.195 30.4)
-
Step 800
800
#960B00
oklch(42.7% 0.17 30.3)
-
Step 900
900
#7A150B
oklch(37.7% 0.137 30.2)
-
Step 950
950
#481009
oklch(27.1% 0.086 30.5)
#E43A27 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) | #6F6322 | 0.223 |
| Deuteranopia (no green cones) | #99881D | 0.202 |
| Tritanopia (no blue cones) | #FB0038 | 0.056 |
| Achromatopsia (no color) | #7B7B7B | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E43A27
#E43A27
oklch(60.6% 0.209 30.4)
- #0092A5
#0092A5
oklch(60.5% 0.105 210.8)
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 #E43A27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.020
- Imperial Red #E63946 ΔE 0.030
- Vermillion #F4320C ΔE 0.031
- Red Pantone #EF233C ΔE 0.038
- Deep Orange #DC4D01 ΔE 0.039
- Pale Red #D9544D ΔE 0.045
- Faded Red #D3494E ΔE 0.046
- Cherry Red #F7022A ΔE 0.046
Use #E43A27 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.