#E3111B
Closest named color: Crimson (#DC143C). oklch(58% 0.231 27.4), rgb(227, 17, 27).
Aa
White text reads best on this color (4.81:1).
About this color
#E3111B is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.231 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.032 away. White text reads best on it, at 4.81:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.231) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #E3111B |
| RGB | rgb(227, 17, 27) |
| HSL | hsl(357, 86%, 48%) |
| OKLCH | oklch(58% 0.231 27.4) |
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 #E3111B | 4.81:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #E3111B | 4.36:1 | AA large text | Lc 33.2 | Non-text elements, placeholder text |
| #E3111B text on white | 4.81:1 | AA | Lc 70.9 | Content text, not long reading |
| #E3111B text on black | 4.36:1 | AA large text | Lc -30.8 | 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 600.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DF
oklch(93.7% 0.03 27.8)
-
Step 200
200
#FDCBC4
oklch(88.4% 0.058 27.5)
-
Step 300
300
#FDA79C
oklch(81% 0.104 27.6)
-
Step 400
400
#F77165
oklch(70.7% 0.167 27.3)
-
Step 500
500
#EF4039
oklch(63.2% 0.213 27.5)
-
Step 600
600 (this color)
#E3111B
oklch(58% 0.231 27.4)
-
Step 700
700
#B7000F
oklch(49% 0.2 27.4)
-
Step 800
800
#98000A
oklch(42.7% 0.174 27.5)
-
Step 900
900
#7B1211
oklch(37.7% 0.139 27.5)
-
Step 950
950
#480F0C
oklch(27% 0.087 27.6)
#E3111B 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) | #615616 | 0.255 |
| Deuteranopia (no green cones) | #918106 | 0.229 |
| Tritanopia (no blue cones) | #FB001B | 0.047 |
| Achromatopsia (no color) | #727272 | 0.233 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3111B
#E3111B
oklch(58% 0.231 27.4)
- #008A98
#008A98
oklch(57.9% 0.099 207.3)
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 #E3111B, closest first.
No curated palette has a color within ΔE 0.04 of #E3111B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.032
- Tomato Red #EC2D01 ΔE 0.035
- Red Pantone #EF233C ΔE 0.038
- Cherry Red #F7022A ΔE 0.041
- Imperial Red #E63946 ΔE 0.044
- Cherry #CF0234 ΔE 0.050
- Vermillion #F4320C ΔE 0.050
- Fire Engine Red #FE0002 ΔE 0.053
Use #E3111B 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.