#EF3A2A
Closest named color: Vermillion (#F4320C). oklch(62.5% 0.219 29.7), rgb(239, 58, 42).
Aa
Black text reads best on this color (5.30:1).
About this color
#EF3A2A is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.219 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.016 away. Black text reads best on it, at 5.30:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.219) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #EF3A2A |
| RGB | rgb(239, 58, 42) |
| HSL | hsl(5, 86%, 55%) |
| OKLCH | oklch(62.5% 0.219 29.7) |
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 #EF3A2A | 3.95:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #EF3A2A | 5.30:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #EF3A2A text on white | 3.95:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #EF3A2A text on black | 5.30:1 | AA | Lc -36.4 | 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
#FECBC2
oklch(88.4% 0.06 29.9)
-
Step 300
300
#FEA698
oklch(80.9% 0.107 29.5)
-
Step 400
400
#F9705E
oklch(70.7% 0.171 29.6)
-
Step 500
500 (this color)
#EF3A2A
oklch(62.5% 0.219 29.7)
-
Step 600
600
#D80A00
oklch(55.6% 0.225 29.7)
-
Step 700
700
#B70700
oklch(49.1% 0.199 29.7)
-
Step 800
800
#970400
oklch(42.6% 0.173 29.6)
-
Step 900
900
#7C0F08
oklch(37.7% 0.143 29.5)
-
Step 950
950
#490E08
oklch(27% 0.09 29.9)
#EF3A2A 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) | #736726 | 0.234 |
| Deuteranopia (no green cones) | #9F8E1F | 0.213 |
| Tritanopia (no blue cones) | #FF0039 | 0.047 |
| Achromatopsia (no color) | #808080 | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF3A2A
#EF3A2A
oklch(62.5% 0.219 29.7)
- #0099AB
#0099AB
oklch(62.5% 0.108 209.4)
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 #EF3A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.016
- Tomato Red #EC2D01 ΔE 0.022
- Orangey Red #FA4224 ΔE 0.027
- Red Orange #FD3C06 ΔE 0.032
- Imperial Red #E63946 ΔE 0.032
- Red Pantone #EF233C ΔE 0.033
- Cherry Red #F7022A ΔE 0.037
- Orangered #FE420F ΔE 0.037
Use #EF3A2A 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.