#E55128
Closest named color: Deep Orange (#DC4D01). oklch(63.1% 0.191 35.8), rgb(229, 81, 40).
Aa
Black text reads best on this color (5.53:1).
About this color
#E55128 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.026 away. Black text reads best on it, at 5.53:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #E55128 |
| RGB | rgb(229, 81, 40) |
| HSL | hsl(13, 78%, 53%) |
| OKLCH | oklch(63.1% 0.191 35.8) |
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 #E55128 | 3.79:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #E55128 | 5.53:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #E55128 text on white | 3.79:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #E55128 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
#FBE4DE
oklch(93.6% 0.027 35)
-
Step 200
200
#F9CEC2
oklch(88.5% 0.052 36.1)
-
Step 300
300
#F6AB97
oklch(80.8% 0.093 35.5)
-
Step 400
400
#EE7A5C
oklch(70.6% 0.15 35.5)
-
Step 500
500 (this color)
#E55128
oklch(63.1% 0.191 35.8)
-
Step 600
600
#CA3600
oklch(55.5% 0.191 35.7)
-
Step 700
700
#AB2C00
oklch(49% 0.169 35.7)
-
Step 800
800
#8D2300
oklch(42.6% 0.147 35.8)
-
Step 900
900
#751F05
oklch(37.7% 0.124 35.8)
-
Step 950
950
#451407
oklch(27% 0.079 35.8)
#E55128 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) | #7C6E21 | 0.195 |
| Deuteranopia (no green cones) | #A08F21 | 0.178 |
| Tritanopia (no blue cones) | #FC2549 | 0.076 |
| Achromatopsia (no color) | #838383 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E55128
#E55128
oklch(63.1% 0.191 35.8)
- #009AB4
#009AB4
oklch(63.2% 0.112 215.3)
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 #E55128, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.026
- Pale Red #D9544D ΔE 0.039
- Orangey Red #FA4224 ΔE 0.041
- Vermillion #F4320C ΔE 0.043
- Tomato Red #EC2D01 ΔE 0.045
- Pastel Red #DB5856 ΔE 0.045
- Orange Pant #FB5607 ΔE 0.046
- Orangered #FE420F ΔE 0.046
Use #E55128 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.