#EF3A25
Closest named color: Vermillion (#F4320C). oklch(62.5% 0.22 30.6), rgb(239, 58, 37).
Aa
Black text reads best on this color (5.30:1).
About this color
#EF3A25 is a medium-light, vivid red. In OKLCH its lightness is 62%, its chroma 0.220 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.013 away. Black text reads best on it, at 5.30:1.
| Hue family | Reds |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.220) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #EF3A25 |
| RGB | rgb(239, 58, 37) |
| HSL | hsl(6, 86%, 54%) |
| OKLCH | oklch(62.5% 0.22 30.6) |
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 #EF3A25 | 3.96:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #EF3A25 | 5.30:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #EF3A25 text on white | 3.96:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #EF3A25 text on black | 5.30:1 | AA | Lc -36.3 | 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
#FECBC2
oklch(88.4% 0.06 29.9)
-
Step 300
300
#FEA697
oklch(80.8% 0.107 30.1)
-
Step 400
400
#F9705C
oklch(70.7% 0.172 30.3)
-
Step 500
500 (this color)
#EF3A25
oklch(62.5% 0.22 30.6)
-
Step 600
600
#D61700
oklch(55.6% 0.22 30.5)
-
Step 700
700
#B51200
oklch(49.1% 0.194 30.6)
-
Step 800
800
#960D00
oklch(42.8% 0.169 30.6)
-
Step 900
900
#7C1004
oklch(37.7% 0.143 30.8)
-
Step 950
950
#490E07
oklch(27% 0.09 30.6)
#EF3A25 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) | #736620 | 0.235 |
| Deuteranopia (no green cones) | #A08E19 | 0.212 |
| Tritanopia (no blue cones) | #FF0038 | 0.048 |
| Achromatopsia (no color) | #808080 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF3A25
#EF3A25
oklch(62.5% 0.22 30.6)
- #0099AC
#0099AC
oklch(62.6% 0.108 210.2)
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 #EF3A25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.013
- Tomato Red #EC2D01 ΔE 0.020
- Orangey Red #FA4224 ΔE 0.026
- Red Orange #FD3C06 ΔE 0.031
- Imperial Red #E63946 ΔE 0.035
- Orangered #FE420F ΔE 0.036
- Red Pantone #EF233C ΔE 0.036
- Fire Engine Red #FE0002 ΔE 0.038
Use #EF3A25 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.