#FD1F09
Closest named color: Red (#FF0000). oklch(63.2% 0.248 30.1), rgb(253, 31, 9).
Aa
Black text reads best on this color (5.37:1).
About this color
#FD1F09 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.248 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Red (#FF0000), ΔE 0.011 away. Black text reads best on it, at 5.37:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.248) |
| Temperature | warm |
| Nearest name | Red (#FF0000) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #FD1F09 |
| RGB | rgb(253, 31, 9) |
| HSL | hsl(5, 98%, 51%) |
| OKLCH | oklch(63.2% 0.248 30.1) |
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 #FD1F09 | 3.90:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #FD1F09 | 5.37:1 | AA | Lc 40.0 | Non-text elements, placeholder text |
| #FD1F09 text on white | 3.90:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #FD1F09 text on black | 5.37:1 | AA | Lc -37.6 | 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
#FFE2DD
oklch(93.5% 0.033 29.4)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA697
oklch(81% 0.108 30.1)
-
Step 400
400
#FF6A56
oklch(70.7% 0.186 30.1)
-
Step 500
500 (this color)
#FD1F09
oklch(63.2% 0.248 30.1)
-
Step 600
600
#D71200
oklch(55.7% 0.222 30.1)
-
Step 700
700
#B60D00
oklch(49.1% 0.196 30.1)
-
Step 800
800
#960900
oklch(42.6% 0.17 30.1)
-
Step 900
900
#7F0600
oklch(37.7% 0.151 30.1)
-
Step 950
950
#4D0602
oklch(27% 0.102 30.3)
#FD1F09 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) | #706300 | 0.271 |
| Deuteranopia (no green cones) | #A49100 | 0.239 |
| Tritanopia (no blue cones) | #FF0021 | 0.018 |
| Achromatopsia (no color) | #818181 | 0.250 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FD1F09
#FD1F09
oklch(63.2% 0.248 30.1)
- #009BAE
#009BAE
oklch(63.2% 0.109 210)
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 #FD1F09, closest first.
No curated palette has a color within ΔE 0.04 of #FD1F09.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red #FF0000 ΔE 0.011
- Fire Engine Red #FE0002 ΔE 0.011
- Bright Red #FF000D ΔE 0.012
- Vermillion #F4320C ΔE 0.020
- Red Orange #FD3C06 ΔE 0.027
- Cherry Red #F7022A ΔE 0.028
- Orangey Red #FA4224 ΔE 0.031
- Tomato Red #EC2D01 ΔE 0.033
Use #FD1F09 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.