#FF3931
Closest named color: Orangey Red (#FA4224). oklch(65.3% 0.233 28.2), rgb(255, 57, 49).
Aa
Black text reads best on this color (5.88:1).
About this color
#FF3931 is a medium-light, vivid red. In OKLCH its lightness is 65%, its chroma 0.233 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.018 away. Black text reads best on it, at 5.88:1.
| Hue family | Reds |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.233) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.88:1 |
| White text | 3.57:1 |
Values
| HEX | #FF3931 |
| RGB | rgb(255, 57, 49) |
| HSL | hsl(2, 100%, 60%) |
| OKLCH | oklch(65.3% 0.233 28.2) |
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 #FF3931 | 3.57:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #FF3931 | 5.88:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #FF3931 text on white | 3.57:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #FF3931 text on black | 5.88:1 | AA | Lc -40.2 | 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
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC3
oklch(88.6% 0.06 28.4)
-
Step 300
300
#FFA599
oklch(80.8% 0.109 28)
-
Step 400
400
#FE6B5C
oklch(70.8% 0.182 28.4)
-
Step 500
500 (this color)
#FF3931
oklch(65.3% 0.233 28.2)
-
Step 600
600
#D9000D
oklch(55.6% 0.228 28.2)
-
Step 700
700
#B80009
oklch(49.2% 0.201 28.2)
-
Step 800
800
#980006
oklch(42.7% 0.175 28.2)
-
Step 900
900
#7F0306
oklch(37.6% 0.152 28.1)
-
Step 950
950
#4B0A07
oklch(27% 0.096 28.5)
#FF3931 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) | #786C2D | 0.252 |
| Deuteranopia (no green cones) | #A99726 | 0.229 |
| Tritanopia (no blue cones) | #FF003A | 0.039 |
| Achromatopsia (no color) | #878787 | 0.235 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FF3931
#FF3931
oklch(65.3% 0.233 28.2)
- #00A2B4
#00A2B4
oklch(65.2% 0.112 208.7)
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 #FF3931, closest first.
No curated palette has a color within ΔE 0.04 of #FF3931.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.018
- Red Orange #FD3C06 ΔE 0.022
- Orangered #FE420F ΔE 0.024
- Light Red #FF474C ΔE 0.025
- Strawberry #FB2943 ΔE 0.030
- Orange Red #FF4500 ΔE 0.030
- Vermillion #F4320C ΔE 0.031
- Pinky Red #FC2647 ΔE 0.034
Use #FF3931 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.