#E3703A
Closest named color: Burnt Sienna (#E76F51). oklch(67.1% 0.158 43.9), rgb(227, 112, 58).
Aa
Black text reads best on this color (6.64:1).
About this color
#E3703A is a medium-light, vivid orange. In OKLCH its lightness is 67%, its chroma 0.158 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.025 away. Black text reads best on it, at 6.64:1.
| Hue family | Oranges |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.64:1 |
| White text | 3.16:1 |
Values
| HEX | #E3703A |
| RGB | rgb(227, 112, 58) |
| HSL | hsl(19, 75%, 56%) |
| OKLCH | oklch(67.1% 0.158 43.9) |
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 #E3703A | 3.16:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #E3703A | 6.64:1 | AA | Lc 45.9 | Large or bold text, headings |
| #E3703A text on white | 3.16:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #E3703A text on black | 6.64:1 | AA | Lc -43.6 | Non-text elements, placeholder text |
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
#FBE4DB
oklch(93.5% 0.028 42.7)
-
Step 200
200
#FACEBC
oklch(88.5% 0.056 43.4)
-
Step 300
300
#F7AC8C
oklch(80.9% 0.099 44)
-
Step 400
400 (this color)
#E3703A
oklch(67.1% 0.158 43.9)
-
Step 500
500
#DF5A00
oklch(63.1% 0.183 44.1)
-
Step 600
600
#BD4A00
oklch(55.6% 0.163 43.7)
-
Step 700
700
#9F3E00
oklch(49.1% 0.142 44.2)
-
Step 800
800
#843200
oklch(42.8% 0.124 44.1)
-
Step 900
900
#6F2800
oklch(37.7% 0.111 43.6)
-
Step 950
950
#441600
oklch(27% 0.078 44.2)
#E3703A 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) | #908134 | 0.147 |
| Deuteranopia (no green cones) | #AC9B38 | 0.135 |
| Tritanopia (no blue cones) | #F95864 | 0.083 |
| Achromatopsia (no color) | #919191 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3703A
#E3703A
oklch(67.1% 0.158 43.9)
- #00A5CF
#00A5CF
oklch(67.1% 0.126 224.3)
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 #E3703A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.025
- Pumpkin #E17701 ΔE 0.036
- Dark Peach #DE7E5D ΔE 0.038
- Chocolate #D2691E ΔE 0.041
- Terracota #CB6843 ΔE 0.051
- Dusty Orange #F0833A ΔE 0.051
- Dull Orange #D8863B ΔE 0.052
- Terracotta #CA6641 ΔE 0.055
Use #E3703A 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.