#EF831B
Closest named color: Orange Wheel (#F77F00). oklch(71.6% 0.167 56.5), rgb(239, 131, 27).
Aa
Black text reads best on this color (7.93:1).
About this color
#EF831B is a medium-light, vivid orange. In OKLCH its lightness is 72%, its chroma 0.167 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Orange Wheel (#F77F00), ΔE 0.015 away. Black text reads best on it, at 7.93:1.
| Hue family | Oranges |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Orange Wheel (#F77F00) |
| Black text | 7.93:1 |
| White text | 2.64:1 |
Values
| HEX | #EF831B |
| RGB | rgb(239, 131, 27) |
| HSL | hsl(29, 87%, 52%) |
| OKLCH | oklch(71.6% 0.167 56.5) |
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 #EF831B | 2.64:1 | Fails | Lc -56.2 | Large or bold text, headings |
| Black text on #EF831B | 7.93:1 | AAA | Lc 53.0 | Large or bold text, headings |
| #EF831B text on white | 2.64:1 | Fails | Lc 51.0 | Large or bold text, headings |
| #EF831B text on black | 7.93:1 | AAA | Lc -50.9 | 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
#FDF3ED
oklch(97% 0.013 53.4)
-
Step 100
100
#FAE5D7
oklch(93.5% 0.03 56)
-
Step 200
200
#F8D0B5
oklch(88.5% 0.058 55.9)
-
Step 300
300
#F4AF7D
oklch(80.8% 0.104 56.6)
-
Step 400
400 (this color)
#EF831B
oklch(71.6% 0.167 56.5)
-
Step 500
500
#CD6C00
oklch(63.1% 0.154 56.4)
-
Step 600
600
#AD5A00
oklch(55.6% 0.136 56.3)
-
Step 700
700
#924B00
oklch(49.1% 0.12 56.3)
-
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
#3E1C00
oklch(27% 0.066 55.9)
#EF831B 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) | #A39000 | 0.132 |
| Deuteranopia (no green cones) | #BDA91A | 0.119 |
| Tritanopia (no blue cones) | #FF6A71 | 0.110 |
| Achromatopsia (no color) | #9F9F9F | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF831B
#EF831B
oklch(71.6% 0.167 56.5)
- #00B0F7
#00B0F7
oklch(71.7% 0.155 236.4)
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 #EF831B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orange Wheel #F77F00 ΔE 0.015
- Dusty Orange #F0833A ΔE 0.018
- Pumpkin Orange #FB7D07 ΔE 0.022
- Dark Orange #FF8C00 ΔE 0.038
- Pumpkin #E17701 ΔE 0.039
- Dull Orange #D8863B ΔE 0.040
- Faded Orange #F0944D ΔE 0.043
- Tangerine #FF9408 ΔE 0.051
Use #EF831B 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.