#E55037
Closest named color: Pale Red (#D9544D). oklch(63.1% 0.189 32), rgb(229, 80, 55).
Aa
Black text reads best on this color (5.53:1).
About this color
#E55037 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.189 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Pale Red (#D9544D), ΔE 0.030 away. Black text reads best on it, at 5.53:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Pale Red (#D9544D) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #E55037 |
| RGB | rgb(229, 80, 55) |
| HSL | hsl(9, 77%, 56%) |
| OKLCH | oklch(63.1% 0.189 32) |
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 #E55037 | 3.79:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #E55037 | 5.53:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #E55037 text on white | 3.79:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #E55037 text on black | 5.53:1 | AA | Lc -37.3 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC4
oklch(88.4% 0.052 31.6)
-
Step 300
300
#F6AB9B
oklch(80.9% 0.092 32.5)
-
Step 400
400
#EE7A64
oklch(70.7% 0.148 32.1)
-
Step 500
500 (this color)
#E55037
oklch(63.1% 0.189 32)
-
Step 600
600
#D02909
oklch(55.6% 0.205 32.1)
-
Step 700
700
#B21D00
oklch(49.1% 0.186 32)
-
Step 800
800
#921904
oklch(42.7% 0.158 31.9)
-
Step 900
900
#751E10
oklch(37.6% 0.123 31.9)
-
Step 950
950
#45140B
oklch(27% 0.078 32.5)
#E55037 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) | #7A6E33 | 0.197 |
| Deuteranopia (no green cones) | #9F8F31 | 0.180 |
| Tritanopia (no blue cones) | #FC254B | 0.069 |
| Achromatopsia (no color) | #838383 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E55037
#E55037
oklch(63.1% 0.189 32)
- #009BB0
#009BB0
oklch(63.3% 0.11 211.5)
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 #E55037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Red #D9544D ΔE 0.030
- Deep Orange #DC4D01 ΔE 0.034
- Pastel Red #DB5856 ΔE 0.035
- Orangey Red #FA4224 ΔE 0.040
- Vermillion #F4320C ΔE 0.042
- Imperial Red #E63946 ΔE 0.043
- Tomato Red #EC2D01 ΔE 0.045
- Dark Coral #CF524E ΔE 0.047
Use #E55037 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.