#EF703F
Closest named color: Burnt Sienna (#E76F51). oklch(68.9% 0.169 40.7), rgb(239, 112, 63).
Aa
Black text reads best on this color (7.05:1).
About this color
#EF703F is a medium-light, vivid orange. In OKLCH its lightness is 69%, its chroma 0.169 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.023 away. Black text reads best on it, at 7.05:1.
| Hue family | Oranges |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #EF703F |
| RGB | rgb(239, 112, 63) |
| HSL | hsl(17, 85%, 59%) |
| OKLCH | oklch(68.9% 0.169 40.7) |
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 #EF703F | 2.97:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #EF703F | 7.05:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #EF703F text on white | 2.97:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #EF703F text on black | 7.05:1 | AAA | Lc -46.1 | 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
#FEF3EE
oklch(97.1% 0.014 46.2)
-
Step 100
100
#FDE4DB
oklch(93.7% 0.03 40.9)
-
Step 200
200
#FCCDBC
oklch(88.5% 0.058 40.8)
-
Step 300
300
#FBA98C
oklch(80.8% 0.105 40.3)
-
Step 400
400 (this color)
#EF703F
oklch(68.9% 0.169 40.7)
-
Step 500
500
#E55200
oklch(63.1% 0.195 40.7)
-
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
#461300
oklch(26.9% 0.084 40.5)
#EF703F 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) | #938439 | 0.162 |
| Deuteranopia (no green cones) | #B2A03C | 0.148 |
| Tritanopia (no blue cones) | #FF5565 | 0.078 |
| Achromatopsia (no color) | #969696 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF703F
#EF703F
oklch(68.9% 0.169 40.7)
- #00ACD1
#00ACD1
oklch(68.9% 0.126 220.5)
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 #EF703F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.023
- Pinkish Orange #FF724C ΔE 0.033
- Orange Pink #FF6F52 ΔE 0.036
- Tomato #FF6347 ΔE 0.038
- Melon #FF7855 ΔE 0.040
- Dark Peach #DE7E5D ΔE 0.041
- Dusty Orange #F0833A ΔE 0.044
- Bright Orange #FF5B00 ΔE 0.044
Use #EF703F 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.