#E2311F
Closest named color: Tomato Red (#EC2D01). oklch(59.5% 0.215 30.2), rgb(226, 49, 31).
Aa
Black text reads best on this color (4.69:1).
About this color
#E2311F is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.215 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.021 away. Black text reads best on it, at 4.69:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.215) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #E2311F |
| RGB | rgb(226, 49, 31) |
| HSL | hsl(6, 77%, 50%) |
| OKLCH | oklch(59.5% 0.215 30.2) |
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 #E2311F | 4.47:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #E2311F | 4.69:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #E2311F text on white | 4.47:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #E2311F text on black | 4.69:1 | AA | Lc -32.3 | 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
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FDCCC2
oklch(88.5% 0.058 31.6)
-
Step 300
300
#FDA798
oklch(80.9% 0.105 30.3)
-
Step 400
400
#F7725E
oklch(70.7% 0.167 30.4)
-
Step 500
500 (this color)
#E2311F
oklch(59.5% 0.215 30.2)
-
Step 600
600
#D61300
oklch(55.5% 0.221 30.2)
-
Step 700
700
#B60E00
oklch(49.2% 0.196 30.2)
-
Step 800
800
#960A00
oklch(42.6% 0.17 30.2)
-
Step 900
900
#7B1208
oklch(37.6% 0.14 30.2)
-
Step 950
950
#490F08
oklch(27.1% 0.089 30.5)
#E2311F 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) | #6A5E19 | 0.231 |
| Deuteranopia (no green cones) | #958511 | 0.209 |
| Tritanopia (no blue cones) | #F90030 | 0.050 |
| Achromatopsia (no color) | #777777 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E2311F
#E2311F
oklch(59.5% 0.215 30.2)
- #008FA1
#008FA1
oklch(59.6% 0.103 210.3)
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 #E2311F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.021
- Imperial Red #E63946 ΔE 0.035
- Vermillion #F4320C ΔE 0.037
- Red Pantone #EF233C ΔE 0.038
- Deep Orange #DC4D01 ΔE 0.045
- Cherry Red #F7022A ΔE 0.045
- Crimson #DC143C ΔE 0.046
- Faded Red #D3494E ΔE 0.049
Use #E2311F 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.