#E9531F
Closest named color: Deep Orange (#DC4D01). oklch(63.9% 0.195 37.6), rgb(233, 83, 31).
Aa
Black text reads best on this color (5.72:1).
About this color
#E9531F is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.195 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.031 away. Black text reads best on it, at 5.72:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.72:1 |
| White text | 3.67:1 |
Values
| HEX | #E9531F |
| RGB | rgb(233, 83, 31) |
| HSL | hsl(15, 82%, 52%) |
| OKLCH | oklch(63.9% 0.195 37.6) |
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 #E9531F | 3.67:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #E9531F | 5.72:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #E9531F text on white | 3.67:1 | AA large text | Lc 63.2 | Content text, not long reading |
| #E9531F text on black | 5.72:1 | AA | Lc -38.5 | 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
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FBE4DD
oklch(93.6% 0.027 37.6)
-
Step 200
200
#FACEC0
oklch(88.6% 0.054 38.4)
-
Step 300
300
#F7AB94
oklch(80.9% 0.096 37.5)
-
Step 400
400
#EF7A57
oklch(70.7% 0.153 37.4)
-
Step 500
500 (this color)
#E9531F
oklch(63.9% 0.195 37.6)
-
Step 600
600
#C73C00
oklch(55.6% 0.184 37.5)
-
Step 700
700
#A83200
oklch(49.1% 0.162 37.8)
-
Step 800
800
#8B2700
oklch(42.7% 0.141 37.5)
-
Step 900
900
#752000
oklch(37.7% 0.124 37.7)
-
Step 950
950
#451404
oklch(26.9% 0.08 38.3)
#E9531F 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) | #7F7014 | 0.197 |
| Deuteranopia (no green cones) | #A49215 | 0.179 |
| Tritanopia (no blue cones) | #FF254A | 0.082 |
| Achromatopsia (no color) | #858585 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E9531F
#E9531F
oklch(63.9% 0.195 37.6)
- #009CBA
#009CBA
oklch(63.9% 0.115 217.9)
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 #E9531F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.031
- Orange Pant #FB5607 ΔE 0.036
- Orangey Red #FA4224 ΔE 0.037
- Blood Orange #FE4B03 ΔE 0.038
- Orangered #FE420F ΔE 0.041
- Orange Red #FF4500 ΔE 0.041
- Red Orange #FD3C06 ΔE 0.042
- Vermillion #F4320C ΔE 0.044
Use #E9531F 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.