#E18537
Closest named color: Dull Orange (#D8863B). oklch(70.2% 0.144 57.1), rgb(225, 133, 55).
Aa
Black text reads best on this color (7.61:1).
About this color
#E18537 is a medium-light, vivid orange. In OKLCH its lightness is 70%, its chroma 0.144 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Orange (#D8863B), ΔE 0.015 away. Black text reads best on it, at 7.61:1.
| Hue family | Oranges |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Dull Orange (#D8863B) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #E18537 |
| RGB | rgb(225, 133, 55) |
| HSL | hsl(28, 74%, 55%) |
| OKLCH | oklch(70.2% 0.144 57.1) |
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 #E18537 | 2.75:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #E18537 | 7.61:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #E18537 text on white | 2.75:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #E18537 text on black | 7.61:1 | AAA | Lc -49.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#FCF4EE
oklch(97.2% 0.012 59.6)
-
Step 100
100
#F8E6D9
oklch(93.6% 0.026 58.3)
-
Step 200
200
#F4D2BA
oklch(88.6% 0.05 57.2)
-
Step 300
300
#EEB287
oklch(80.9% 0.09 56.7)
-
Step 400
400 (this color)
#E18537
oklch(70.2% 0.144 57.1)
-
Step 500
500
#CC6D00
oklch(63.1% 0.152 57.3)
-
Step 600
600
#AC5B00
oklch(55.6% 0.134 57.3)
-
Step 700
700
#914C00
oklch(49.1% 0.118 57.5)
-
Step 800
800
#783D00
oklch(42.7% 0.104 56.7)
-
Step 900
900
#653200
oklch(37.7% 0.092 56.3)
-
Step 950
950
#3D1C00
oklch(26.8% 0.065 56.8)
#E18537 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) | #A08F2D | 0.112 |
| Deuteranopia (no green cones) | #B6A437 | 0.101 |
| Tritanopia (no blue cones) | #F67175 | 0.099 |
| Achromatopsia (no color) | #9C9C9C | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E18537
#E18537
oklch(70.2% 0.144 57.1)
- #25ABED
#25ABED
oklch(70.3% 0.144 236.9)
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 #E18537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Orange #D8863B ΔE 0.015
- Dusty Orange #F0833A ΔE 0.027
- Pumpkin #E17701 ΔE 0.033
- Peru #CD853F ΔE 0.034
- Orange Wheel #F77F00 ΔE 0.040
- Dark Peach #DE7E5D ΔE 0.046
- Pumpkin Orange #FB7D07 ΔE 0.046
- Faded Orange #F0944D ΔE 0.047
Use #E18537 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.