#E21C0E
Closest named color: Tomato Red (#EC2D01). oklch(58.1% 0.227 29.7), rgb(226, 28, 14).
Aa
White text reads best on this color (4.76:1).
About this color
#E21C0E is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.227 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.029 away. White text reads best on it, at 4.76:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.227) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #E21C0E |
| RGB | rgb(226, 28, 14) |
| HSL | hsl(4, 88%, 47%) |
| OKLCH | oklch(58.1% 0.227 29.7) |
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 #E21C0E | 4.76:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #E21C0E | 4.40:1 | AA large text | Lc 33.3 | Non-text elements, placeholder text |
| #E21C0E text on white | 4.76:1 | AA | Lc 70.8 | Content text, not long reading |
| #E21C0E text on black | 4.40:1 | AA large text | Lc -30.9 | 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 600.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FDCCC3
oklch(88.5% 0.057 30.3)
-
Step 300
300
#FCA89A
oklch(81% 0.102 29.8)
-
Step 400
400
#F57361
oklch(70.6% 0.163 29.8)
-
Step 500
500
#ED4332
oklch(63% 0.209 29.8)
-
Step 600
600 (this color)
#E21C0E
oklch(58.1% 0.227 29.7)
-
Step 700
700
#B70800
oklch(49.2% 0.199 29.7)
-
Step 800
800
#970500
oklch(42.7% 0.173 29.7)
-
Step 900
900
#7A150D
oklch(37.7% 0.137 29.6)
-
Step 950
950
#48100A
oklch(27.1% 0.086 29.8)
#E21C0E 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) | #645804 | 0.247 |
| Deuteranopia (no green cones) | #928100 | 0.220 |
| Tritanopia (no blue cones) | #FA001E | 0.047 |
| Achromatopsia (no color) | #737373 | 0.229 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E21C0E
#E21C0E
oklch(58.1% 0.227 29.7)
- #008A9B
#008A9B
oklch(58% 0.1 209.9)
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 #E21C0E, closest first.
No curated palette has a color within ΔE 0.04 of #E21C0E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.029
- Crimson #DC143C ΔE 0.039
- Red Pantone #EF233C ΔE 0.042
- Cherry Red #F7022A ΔE 0.045
- Imperial Red #E63946 ΔE 0.046
- Vermillion #F4320C ΔE 0.046
- Fire Engine Red #FE0002 ΔE 0.054
- Cherry #CF0234 ΔE 0.055
Use #E21C0E 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.