#E83F21
Closest named color: Tomato Red (#EC2D01). oklch(61.7% 0.21 32.3), rgb(232, 63, 33).
Aa
Black text reads best on this color (5.16:1).
About this color
#E83F21 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.210 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.020 away. Black text reads best on it, at 5.16:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #E83F21 |
| RGB | rgb(232, 63, 33) |
| HSL | hsl(9, 81%, 52%) |
| OKLCH | oklch(61.7% 0.21 32.3) |
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 #E83F21 | 4.06:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #E83F21 | 5.16:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #E83F21 text on white | 4.06:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #E83F21 text on black | 5.16:1 | AA | Lc -35.3 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FDCCC2
oklch(88.5% 0.058 31.6)
-
Step 300
300
#FCA897
oklch(81% 0.103 32)
-
Step 400
400
#F5745B
oklch(70.7% 0.164 32.5)
-
Step 500
500 (this color)
#E83F21
oklch(61.7% 0.21 32.3)
-
Step 600
600
#D12600
oklch(55.5% 0.208 32.3)
-
Step 700
700
#B11F00
oklch(49.1% 0.184 32.4)
-
Step 800
800
#931800
oklch(42.8% 0.16 32.4)
-
Step 900
900
#7A1604
oklch(37.7% 0.137 32.4)
-
Step 950
950
#481007
oklch(27% 0.087 32)
#E83F21 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) | #73661A | 0.222 |
| Deuteranopia (no green cones) | #9D8B15 | 0.199 |
| Tritanopia (no blue cones) | #FF003A | 0.062 |
| Achromatopsia (no color) | #7E7E7E | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E83F21
#E83F21
oklch(61.7% 0.21 32.3)
- #0096AB
#0096AB
oklch(61.8% 0.108 212)
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 #E83F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.020
- Vermillion #F4320C ΔE 0.024
- Deep Orange #DC4D01 ΔE 0.034
- Orangey Red #FA4224 ΔE 0.036
- Imperial Red #E63946 ΔE 0.037
- Red Orange #FD3C06 ΔE 0.040
- Red Pantone #EF233C ΔE 0.043
- Orangered #FE420F ΔE 0.045
Use #E83F21 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.