#F55143
Closest named color: Light Red (#FF474C). oklch(66% 0.203 28.7), rgb(245, 81, 67).
Aa
Black text reads best on this color (6.14:1).
About this color
#F55143 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.203 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Light Red (#FF474C), ΔE 0.025 away. Black text reads best on it, at 6.14:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.203) |
| Temperature | warm |
| Nearest name | Light Red (#FF474C) |
| Black text | 6.14:1 |
| White text | 3.41:1 |
Values
| HEX | #F55143 |
| RGB | rgb(245, 81, 67) |
| HSL | hsl(5, 90%, 61%) |
| OKLCH | oklch(66% 0.203 28.7) |
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 #F55143 | 3.41:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #F55143 | 6.14:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #F55143 text on white | 3.41:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #F55143 text on black | 6.14:1 | AA | Lc -41.2 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FAA89C
oklch(80.8% 0.099 28.6)
-
Step 400
400
#F37566
oklch(70.7% 0.158 28.6)
-
Step 500
500 (this color)
#F55143
oklch(66% 0.203 28.7)
-
Step 600
600
#D61412
oklch(55.6% 0.22 28.7)
-
Step 700
700
#B80005
oklch(49.2% 0.201 28.7)
-
Step 800
800
#960909
oklch(42.7% 0.169 28.5)
-
Step 900
900
#781812
oklch(37.6% 0.131 28.7)
-
Step 950
950
#47110C
oklch(27% 0.083 29)
#F55143 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) | #807440 | 0.214 |
| Deuteranopia (no green cones) | #A8983D | 0.197 |
| Tritanopia (no blue cones) | #FF1E4F | 0.062 |
| Achromatopsia (no color) | #8B8B8B | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F55143
#F55143
oklch(66% 0.203 28.7)
- #00A5B7
#00A5B7
oklch(66.1% 0.114 208.4)
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 #F55143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Red #FF474C ΔE 0.025
- Orangey Red #FA4224 ΔE 0.026
- Grapefruit #FD5956 ΔE 0.027
- Orangered #FE420F ΔE 0.034
- Watermelon #FD4659 ΔE 0.036
- Blood Orange #FE4B03 ΔE 0.036
- Orange Red #FF4500 ΔE 0.037
- Red Orange #FD3C06 ΔE 0.038
Use #F55143 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.