#E45319
Closest named color: Deep Orange (#DC4D01). oklch(63.1% 0.191 38.9), rgb(228, 83, 25).
Aa
Black text reads best on this color (5.55:1).
About this color
#E45319 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.021 away. Black text reads best on it, at 5.55:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.55:1 |
| White text | 3.78:1 |
Values
| HEX | #E45319 |
| RGB | rgb(228, 83, 25) |
| HSL | hsl(17, 80%, 50%) |
| OKLCH | oklch(63.1% 0.191 38.9) |
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 #E45319 | 3.78:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #E45319 | 5.55:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #E45319 text on white | 3.78:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #E45319 text on black | 5.55:1 | AA | Lc -37.4 | 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 500.
-
Step 50
50
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FBE4DD
oklch(93.6% 0.027 37.6)
-
Step 200
200
#F9CEC0
oklch(88.5% 0.053 38.8)
-
Step 300
300
#F6AC94
oklch(80.9% 0.094 38.7)
-
Step 400
400
#ED7C56
oklch(70.7% 0.149 39.1)
-
Step 500
500 (this color)
#E45319
oklch(63.1% 0.191 38.9)
-
Step 600
600
#C54000
oklch(55.7% 0.179 38.9)
-
Step 700
700
#A63500
oklch(49.1% 0.157 39.1)
-
Step 800
800
#892A00
oklch(42.6% 0.137 39)
-
Step 900
900
#742200
oklch(37.8% 0.121 38.9)
-
Step 950
950
#451504
oklch(27.1% 0.079 39.3)
#E45319 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) | #7E6F0A | 0.191 |
| Deuteranopia (no green cones) | #A18F0D | 0.173 |
| Tritanopia (no blue cones) | #FB2849 | 0.083 |
| Achromatopsia (no color) | #838383 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E45319
#E45319
oklch(63.1% 0.191 38.9)
- #0099B8
#0099B8
oklch(63.1% 0.114 219)
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 #E45319, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.021
- Rusty Orange #CD5909 ΔE 0.045
- Orange Pant #FB5607 ΔE 0.045
- Orangey Red #FA4224 ΔE 0.046
- Pale Red #D9544D ΔE 0.047
- Blood Orange #FE4B03 ΔE 0.048
- Vermillion #F4320C ΔE 0.048
- Tomato Red #EC2D01 ΔE 0.049
Use #E45319 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.