#E3540D
Closest named color: Deep Orange (#DC4D01). oklch(63% 0.191 40.6), rgb(227, 84, 13).
Aa
Black text reads best on this color (5.54:1).
About this color
#E3540D is a medium-light, vivid orange. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.020 away. Black text reads best on it, at 5.54:1.
| Hue family | Oranges |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.54:1 |
| White text | 3.79:1 |
Values
| HEX | #E3540D |
| RGB | rgb(227, 84, 13) |
| HSL | hsl(20, 89%, 47%) |
| OKLCH | oklch(63% 0.191 40.6) |
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 #E3540D | 3.79:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #E3540D | 5.54:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #E3540D text on white | 3.79:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #E3540D text on black | 5.54:1 | 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
#FDF3EF
oklch(97.1% 0.012 43.3)
-
Step 100
100
#FBE4DC
oklch(93.5% 0.028 40.2)
-
Step 200
200
#F8CFC0
oklch(88.6% 0.051 41.1)
-
Step 300
300
#F5AD92
oklch(81% 0.093 41.4)
-
Step 400
400
#ED7D53
oklch(70.8% 0.149 40.8)
-
Step 500
500 (this color)
#E3540D
oklch(63% 0.191 40.6)
-
Step 600
600
#C24400
oklch(55.7% 0.173 40.6)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800
#872D00
oklch(42.7% 0.132 40.7)
-
Step 900
900
#722400
oklch(37.7% 0.117 40.3)
-
Step 950
950
#451503
oklch(27.1% 0.079 40.1)
#E3540D 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) | #7E6F00 | 0.188 |
| Deuteranopia (no green cones) | #A18F00 | 0.170 |
| Tritanopia (no blue cones) | #FA2A49 | 0.087 |
| Achromatopsia (no color) | #838383 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3540D
#E3540D
oklch(63% 0.191 40.6)
- #0098BA
#0098BA
oklch(62.9% 0.116 221.1)
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 #E3540D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.020
- Rusty Orange #CD5909 ΔE 0.041
- Chocolate #D2691E ΔE 0.046
- Orange Pant #FB5607 ΔE 0.046
- Blood Orange #FE4B03 ΔE 0.050
- Orangey Red #FA4224 ΔE 0.050
- Pale Red #D9544D ΔE 0.051
- Vermillion #F4320C ΔE 0.051
Use #E3540D 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.