#E21E30
Closest named color: Crimson (#DC143C). oklch(58.5% 0.224 24.4), rgb(226, 30, 48).
Aa
White text reads best on this color (4.70:1).
About this color
#E21E30 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.224 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.022 away. White text reads best on it, at 4.70:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.224) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #E21E30 |
| RGB | rgb(226, 30, 48) |
| HSL | hsl(354, 77%, 50%) |
| OKLCH | oklch(58.5% 0.224 24.4) |
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 #E21E30 | 4.70:1 | AA | Lc -76.0 | Fine for body text |
| Black text on #E21E30 | 4.46:1 | AA large text | Lc 33.6 | Non-text elements, placeholder text |
| #E21E30 text on white | 4.70:1 | AA | Lc 70.5 | Content text, not long reading |
| #E21E30 text on black | 4.46:1 | AA large text | Lc -31.1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC7
oklch(88.6% 0.055 25.2)
-
Step 300
300
#FBA7A0
oklch(80.9% 0.101 24.8)
-
Step 400
400
#F4736D
oklch(70.7% 0.16 24.7)
-
Step 500
500
#EC4346
oklch(63.1% 0.206 24.4)
-
Step 600
600 (this color)
#E21E30
oklch(58.5% 0.224 24.4)
-
Step 700
700
#B7001E
oklch(49.1% 0.199 24.5)
-
Step 800
800
#970118
oklch(42.7% 0.172 24.3)
-
Step 900
900
#79151A
oklch(37.7% 0.134 24.4)
-
Step 950
950
#481010
oklch(27.2% 0.085 24.8)
#E21E30 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) | #62592E | 0.247 |
| Deuteranopia (no green cones) | #918227 | 0.223 |
| Tritanopia (no blue cones) | #F90028 | 0.044 |
| Achromatopsia (no color) | #747474 | 0.225 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E21E30
#E21E30
oklch(58.5% 0.224 24.4)
- #008C97
#008C97
oklch(58.4% 0.1 204.6)
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 #E21E30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.022
- Red Pantone #EF233C ΔE 0.029
- Imperial Red #E63946 ΔE 0.033
- Tomato Red #EC2D01 ΔE 0.040
- Cherry Red #F7022A ΔE 0.040
- Cherry #CF0234 ΔE 0.047
- Lipstick #D5174E ΔE 0.047
- Pink Red #F5054F ΔE 0.051
Use #E21E30 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.