#EF6F39
Closest named color: Burnt Sienna (#E76F51). oklch(68.7% 0.172 41.8), rgb(239, 111, 57).
Aa
Black text reads best on this color (7.00:1).
About this color
#EF6F39 is a medium-light, vivid orange. In OKLCH its lightness is 69%, its chroma 0.172 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.026 away. Black text reads best on it, at 7.00:1.
| Hue family | Oranges |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.172) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #EF6F39 |
| RGB | rgb(239, 111, 57) |
| HSL | hsl(18, 85%, 58%) |
| OKLCH | oklch(68.7% 0.172 41.8) |
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 #EF6F39 | 2.99:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #EF6F39 | 7.00:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #EF6F39 text on white | 2.99:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #EF6F39 text on black | 7.00:1 | AAA | Lc -45.8 | 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
#FFF3EE
oklch(97.2% 0.015 44.2)
-
Step 100
100
#FDE4DA
oklch(93.6% 0.031 43.1)
-
Step 200
200
#FDCDBB
oklch(88.5% 0.06 41.6)
-
Step 300
300
#FCA98A
oklch(80.9% 0.107 41.3)
-
Step 400
400 (this color)
#EF6F39
oklch(68.7% 0.172 41.8)
-
Step 500
500
#E35500
oklch(63.1% 0.191 41.8)
-
Step 600
600
#C04600
oklch(55.6% 0.169 41.6)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#712600
oklch(37.8% 0.115 41.7)
-
Step 950
950
#451400
oklch(26.9% 0.081 41.8)
#EF6F39 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) | #938332 | 0.163 |
| Deuteranopia (no green cones) | #B2A036 | 0.150 |
| Tritanopia (no blue cones) | #FF5364 | 0.082 |
| Achromatopsia (no color) | #959595 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF6F39
#EF6F39
oklch(68.7% 0.172 41.8)
- #00ABD2
#00ABD2
oklch(68.7% 0.127 221.8)
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 #EF6F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.026
- Pinkish Orange #FF724C ΔE 0.035
- Orange Pink #FF6F52 ΔE 0.039
- Tomato #FF6347 ΔE 0.040
- Bright Orange #FF5B00 ΔE 0.041
- Melon #FF7855 ΔE 0.043
- Dusty Orange #F0833A ΔE 0.044
- Pumpkin #E17701 ΔE 0.044
Use #EF6F39 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.