#EF3D2D
Closest named color: Vermillion (#F4320C). oklch(62.8% 0.216 29.6), rgb(239, 61, 45).
Aa
Black text reads best on this color (5.37:1).
About this color
#EF3D2D is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.216 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.018 away. Black text reads best on it, at 5.37:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.216) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #EF3D2D |
| RGB | rgb(239, 61, 45) |
| HSL | hsl(5, 86%, 56%) |
| OKLCH | oklch(62.8% 0.216 29.6) |
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 #EF3D2D | 3.90:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #EF3D2D | 5.37:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #EF3D2D text on white | 3.90:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #EF3D2D text on black | 5.37:1 | AA | Lc -36.7 | 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
#FECBC3
oklch(88.5% 0.059 28.6)
-
Step 300
300
#FEA698
oklch(80.9% 0.107 29.5)
-
Step 400
400
#F8715F
oklch(70.7% 0.169 29.6)
-
Step 500
500 (this color)
#EF3D2D
oklch(62.8% 0.216 29.6)
-
Step 600
600
#D80900
oklch(55.6% 0.225 29.6)
-
Step 700
700
#B70600
oklch(49.1% 0.199 29.6)
-
Step 800
800
#970400
oklch(42.6% 0.173 29.6)
-
Step 900
900
#7C1109
oklch(37.8% 0.142 29.7)
-
Step 950
950
#490E09
oklch(27% 0.09 29.2)
#EF3D2D 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) | #746829 | 0.231 |
| Deuteranopia (no green cones) | #A08F24 | 0.210 |
| Tritanopia (no blue cones) | #FF003B | 0.049 |
| Achromatopsia (no color) | #818181 | 0.218 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF3D2D
#EF3D2D
oklch(62.8% 0.216 29.6)
- #009AAC
#009AAC
oklch(62.8% 0.108 209.3)
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 #EF3D2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.018
- Tomato Red #EC2D01 ΔE 0.025
- Orangey Red #FA4224 ΔE 0.025
- Red Orange #FD3C06 ΔE 0.032
- Imperial Red #E63946 ΔE 0.033
- Red Pantone #EF233C ΔE 0.035
- Orangered #FE420F ΔE 0.036
- Strawberry #FB2943 ΔE 0.038
Use #EF3D2D 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.