#E7451B
Closest named color: Deep Orange (#DC4D01). oklch(62.1% 0.205 34.6), rgb(231, 69, 27).
Aa
Black text reads best on this color (5.26:1).
About this color
#E7451B is a medium-light, vivid red. In OKLCH its lightness is 62%, its chroma 0.205 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.026 away. Black text reads best on it, at 5.26:1.
| Hue family | Reds |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.26:1 |
| White text | 3.98:1 |
Values
| HEX | #E7451B |
| RGB | rgb(231, 69, 27) |
| HSL | hsl(12, 81%, 51%) |
| OKLCH | oklch(62.1% 0.205 34.6) |
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 #E7451B | 3.98:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #E7451B | 5.26:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #E7451B text on white | 3.98:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #E7451B text on black | 5.26:1 | AA | Lc -35.8 | 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
#FEF2EF
oklch(97% 0.014 34.3)
-
Step 100
100
#FDE4DD
oklch(93.7% 0.029 36.2)
-
Step 200
200
#FCCDC1
oklch(88.6% 0.056 34.7)
-
Step 300
300
#FAA995
oklch(80.9% 0.1 34.5)
-
Step 400
400
#F37658
oklch(70.6% 0.16 34.7)
-
Step 500
500 (this color)
#E7451B
oklch(62.1% 0.205 34.6)
-
Step 600
600
#CD3200
oklch(55.7% 0.197 34.6)
-
Step 700
700
#AD2900
oklch(49.1% 0.173 34.7)
-
Step 800
800
#8F2000
oklch(42.7% 0.151 34.7)
-
Step 900
900
#781900
oklch(37.6% 0.133 34.6)
-
Step 950
950
#471105
oklch(26.9% 0.085 34.5)
#E7451B 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) | #766811 | 0.214 |
| Deuteranopia (no green cones) | #9E8D0C | 0.194 |
| Tritanopia (no blue cones) | #FF003E | 0.073 |
| Achromatopsia (no color) | #7F7F7F | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E7451B
#E7451B
oklch(62.1% 0.205 34.6)
- #0096AF
#0096AF
oklch(62% 0.109 215)
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 #E7451B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.026
- Tomato Red #EC2D01 ΔE 0.027
- Vermillion #F4320C ΔE 0.029
- Orangey Red #FA4224 ΔE 0.037
- Red Orange #FD3C06 ΔE 0.041
- Orangered #FE420F ΔE 0.043
- Imperial Red #E63946 ΔE 0.045
- Pale Red #D9544D ΔE 0.046
Use #E7451B 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.