#EF7037
Closest named color: Burnt Sienna (#E76F51). oklch(68.8% 0.172 42.7), rgb(239, 112, 55).
Aa
Black text reads best on this color (7.04:1).
About this color
#EF7037 is a medium-light, vivid orange. In OKLCH its lightness is 69%, its chroma 0.172 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.028 away. Black text reads best on it, at 7.04:1.
| Hue family | Oranges |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.172) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #EF7037 |
| RGB | rgb(239, 112, 55) |
| HSL | hsl(19, 85%, 58%) |
| OKLCH | oklch(68.8% 0.172 42.7) |
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 #EF7037 | 2.98:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #EF7037 | 7.04:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #EF7037 text on white | 2.98:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #EF7037 text on black | 7.04:1 | AAA | Lc -46.0 | 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
#FCCDBA
oklch(88.4% 0.059 43.1)
-
Step 300
300
#FCAA89
oklch(81% 0.107 42.7)
-
Step 400
400 (this color)
#EF7037
oklch(68.8% 0.172 42.7)
-
Step 500
500
#E15700
oklch(63% 0.187 42.8)
-
Step 600
600
#BE4800
oklch(55.5% 0.165 42.7)
-
Step 700
700
#A13C00
oklch(49.1% 0.146 42.8)
-
Step 800
800
#853000
oklch(42.7% 0.127 42.7)
-
Step 900
900
#702700
oklch(37.7% 0.113 42.6)
-
Step 950
950
#451500
oklch(27% 0.081 42.7)
#EF7037 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) | #948430 | 0.161 |
| Deuteranopia (no green cones) | #B2A034 | 0.148 |
| Tritanopia (no blue cones) | #FF5464 | 0.084 |
| Achromatopsia (no color) | #959595 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF7037
#EF7037
oklch(68.8% 0.172 42.7)
- #00ABD4
#00ABD4
oklch(68.8% 0.128 223)
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 #EF7037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.028
- Pinkish Orange #FF724C ΔE 0.036
- Orange Pink #FF6F52 ΔE 0.040
- Dusty Orange #F0833A ΔE 0.041
- Tomato #FF6347 ΔE 0.042
- Pumpkin #E17701 ΔE 0.042
- Bright Orange #FF5B00 ΔE 0.042
- Melon #FF7855 ΔE 0.043
Use #EF7037 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.