#E15537
Closest named color: Pale Red (#D9544D). oklch(63.1% 0.181 33.8), rgb(225, 85, 55).
Aa
Black text reads best on this color (5.55:1).
About this color
#E15537 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.181 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Pale Red (#D9544D), ΔE 0.028 away. Black text reads best on it, at 5.55:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Pale Red (#D9544D) |
| Black text | 5.55:1 |
| White text | 3.77:1 |
Values
| HEX | #E15537 |
| RGB | rgb(225, 85, 55) |
| HSL | hsl(11, 74%, 55%) |
| OKLCH | oklch(63.1% 0.181 33.8) |
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 #E15537 | 3.77:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #E15537 | 5.55:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #E15537 text on white | 3.77:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #E15537 text on black | 5.55:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE4DF
oklch(93.5% 0.025 32.9)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F4AC9B
oklch(80.9% 0.089 33.8)
-
Step 400
400
#EB7D64
oklch(70.8% 0.141 33.9)
-
Step 500
500 (this color)
#E15537
oklch(63.1% 0.181 33.8)
-
Step 600
600
#CD3209
oklch(55.7% 0.196 33.8)
-
Step 700
700
#AF2500
oklch(49.1% 0.178 33.7)
-
Step 800
800
#8F1F04
oklch(42.6% 0.151 33.6)
-
Step 900
900
#732210
oklch(37.7% 0.117 33.9)
-
Step 950
950
#44150B
oklch(27% 0.075 33.7)
#E15537 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) | #7C7033 | 0.185 |
| Deuteranopia (no green cones) | #9F8F32 | 0.170 |
| Tritanopia (no blue cones) | #F7314F | 0.070 |
| Achromatopsia (no color) | #838383 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E15537
#E15537
oklch(63.1% 0.181 33.8)
- #009AB2
#009AB2
oklch(63.1% 0.111 213.9)
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 #E15537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Red #D9544D ΔE 0.028
- Deep Orange #DC4D01 ΔE 0.031
- Pastel Red #DB5856 ΔE 0.033
- Dark Coral #CF524E ΔE 0.044
- Terracotta #CA6641 ΔE 0.048
- Orangey Red #FA4224 ΔE 0.048
- Terra Cotta #C9643B ΔE 0.049
- Terracota #CB6843 ΔE 0.049
Use #E15537 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.