#EF8B37
Closest named color: Dusty Orange (#F0833A). oklch(73% 0.154 56.4), rgb(239, 139, 55).
Aa
Black text reads best on this color (8.41:1).
About this color
#EF8B37 is a medium-light, vivid orange. In OKLCH its lightness is 73%, its chroma 0.154 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Dusty Orange (#F0833A), ΔE 0.019 away. Black text reads best on it, at 8.41:1.
| Hue family | Oranges |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Dusty Orange (#F0833A) |
| Black text | 8.41:1 |
| White text | 2.49:1 |
Values
| HEX | #EF8B37 |
| RGB | rgb(239, 139, 55) |
| HSL | hsl(27, 85%, 58%) |
| OKLCH | oklch(73% 0.154 56.4) |
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 #EF8B37 | 2.49:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #EF8B37 | 8.41:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #EF8B37 text on white | 2.49:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #EF8B37 text on black | 8.41:1 | AAA | Lc -53.4 | 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
#F9E6D8
oklch(93.6% 0.028 58.8)
-
Step 200
200
#F6D1B8
oklch(88.6% 0.054 56)
-
Step 300
300
#F1B183
oklch(81% 0.096 56.6)
-
Step 400
400 (this color)
#EF8B37
oklch(73% 0.154 56.4)
-
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)
#EF8B37 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) | #A9962B | 0.120 |
| Deuteranopia (no green cones) | #C1AD37 | 0.108 |
| Tritanopia (no blue cones) | #FF757A | 0.102 |
| Achromatopsia (no color) | #A4A4A4 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF8B37
#EF8B37
oklch(73% 0.154 56.4)
- #18B4FB
#18B4FB
oklch(72.9% 0.154 236.6)
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 #EF8B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Orange #F0833A ΔE 0.019
- Faded Orange #F0944D ΔE 0.023
- Orange Wheel #F77F00 ΔE 0.028
- Dark Orange #FF8C00 ΔE 0.033
- Pumpkin Orange #FB7D07 ΔE 0.033
- Pastel Orange #FF964F ΔE 0.042
- Tangerine #FF9408 ΔE 0.042
- Dull Orange #D8863B ΔE 0.043
Use #EF8B37 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.