#EC3431
Closest named color: Red Pantone (#EF233C). oklch(61.6% 0.22 27.2), rgb(236, 52, 49).
Aa
Black text reads best on this color (5.10:1).
About this color
#EC3431 is a medium-dark, vivid red. In OKLCH its lightness is 62%, its chroma 0.220 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Red Pantone (#EF233C), ΔE 0.022 away. Black text reads best on it, at 5.10:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.220) |
| Temperature | warm |
| Nearest name | Red Pantone (#EF233C) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #EC3431 |
| RGB | rgb(236, 52, 49) |
| HSL | hsl(1, 83%, 56%) |
| OKLCH | oklch(61.6% 0.22 27.2) |
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 #EC3431 | 4.11:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #EC3431 | 5.10:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #EC3431 text on white | 4.11:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #EC3431 text on black | 5.10:1 | AA | Lc -35.1 | 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 500.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DF
oklch(93.7% 0.03 27.8)
-
Step 200
200
#FECBC4
oklch(88.5% 0.059 27.4)
-
Step 300
300
#FFA69B
oklch(81% 0.107 27.4)
-
Step 400
400
#F96F63
oklch(70.7% 0.172 27.3)
-
Step 500
500 (this color)
#EC3431
oklch(61.6% 0.22 27.2)
-
Step 600
600
#D90016
oklch(55.7% 0.227 27.2)
-
Step 700
700
#B70010
oklch(49% 0.2 27.3)
-
Step 800
800
#98000C
oklch(42.7% 0.174 27.2)
-
Step 900
900
#7C0E0F
oklch(37.6% 0.143 27.3)
-
Step 950
950
#490D0B
oklch(26.9% 0.09 27.2)
#EC3431 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) | #6F632E | 0.237 |
| Deuteranopia (no green cones) | #9C8B28 | 0.215 |
| Tritanopia (no blue cones) | #FF0036 | 0.042 |
| Achromatopsia (no color) | #7D7D7D | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC3431
#EC3431
oklch(61.6% 0.22 27.2)
- #0096A5
#0096A5
oklch(61.5% 0.106 207.2)
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 #EC3431, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Pantone #EF233C ΔE 0.022
- Imperial Red #E63946 ΔE 0.022
- Tomato Red #EC2D01 ΔE 0.023
- Vermillion #F4320C ΔE 0.025
- Cherry Red #F7022A ΔE 0.031
- Strawberry #FB2943 ΔE 0.035
- Orangey Red #FA4224 ΔE 0.039
- Fire Engine Red #FE0002 ΔE 0.039
Use #EC3431 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.