#E43621
Closest named color: Tomato Red (#EC2D01). oklch(60.2% 0.213 30.7), rgb(228, 54, 33).
Aa
Black text reads best on this color (4.84:1).
About this color
#E43621 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.213 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.018 away. Black text reads best on it, at 4.84:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.213) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #E43621 |
| RGB | rgb(228, 54, 33) |
| HSL | hsl(6, 78%, 51%) |
| OKLCH | oklch(60.2% 0.213 30.7) |
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 #E43621 | 4.33:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #E43621 | 4.84:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #E43621 text on white | 4.33:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #E43621 text on black | 4.84:1 | AA | Lc -33.3 | 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
#FCA798
oklch(80.8% 0.104 30.5)
-
Step 400
400
#F7725E
oklch(70.7% 0.167 30.4)
-
Step 500
500 (this color)
#E43621
oklch(60.2% 0.213 30.7)
-
Step 600
600
#D51900
oklch(55.5% 0.218 30.7)
-
Step 700
700
#B51300
oklch(49.2% 0.193 30.7)
-
Step 800
800
#950E00
oklch(42.6% 0.167 30.7)
-
Step 900
900
#7B1408
oklch(37.8% 0.139 30.7)
-
Step 950
950
#480F08
oklch(26.9% 0.088 30.6)
#E43621 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) | #6D611B | 0.228 |
| Deuteranopia (no green cones) | #988714 | 0.205 |
| Tritanopia (no blue cones) | #FB0034 | 0.054 |
| Achromatopsia (no color) | #797979 | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E43621
#E43621
oklch(60.2% 0.213 30.7)
- #0091A4
#0091A4
oklch(60.2% 0.104 210.9)
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 #E43621, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.018
- Vermillion #F4320C ΔE 0.031
- Imperial Red #E63946 ΔE 0.033
- Red Pantone #EF233C ΔE 0.038
- Deep Orange #DC4D01 ΔE 0.041
- Cherry Red #F7022A ΔE 0.045
- Faded Red #D3494E ΔE 0.049
- Orangey Red #FA4224 ΔE 0.050
Use #E43621 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.