#F43F1F
Closest named color: Orangey Red (#FA4224). oklch(63.7% 0.221 32.3), rgb(244, 63, 31).
Aa
Black text reads best on this color (5.57:1).
About this color
#F43F1F is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.221 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.013 away. Black text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.221) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #F43F1F |
| RGB | rgb(244, 63, 31) |
| HSL | hsl(9, 91%, 54%) |
| OKLCH | oklch(63.7% 0.221 32.3) |
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 #F43F1F | 3.76:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #F43F1F | 5.57:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #F43F1F text on white | 3.76:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #F43F1F text on black | 5.57:1 | AA | Lc -38.1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DD
oklch(93.6% 0.031 32.6)
-
Step 200
200
#FECBC0
oklch(88.4% 0.06 32.3)
-
Step 300
300
#FEA694
oklch(80.8% 0.108 32.1)
-
Step 400
400
#F97057
oklch(70.6% 0.173 32.1)
-
Step 500
500 (this color)
#F43F1F
oklch(63.7% 0.221 32.3)
-
Step 600
600
#D22600
oklch(55.7% 0.209 32.3)
-
Step 700
700
#B11E00
oklch(49% 0.184 32.2)
-
Step 800
800
#931700
oklch(42.7% 0.161 32.2)
-
Step 900
900
#7C1200
oklch(37.8% 0.142 32.3)
-
Step 950
950
#490E05
oklch(27% 0.09 32.2)
#F43F1F 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) | #786A17 | 0.234 |
| Deuteranopia (no green cones) | #A4920F | 0.212 |
| Tritanopia (no blue cones) | #FF003A | 0.054 |
| Achromatopsia (no color) | #848484 | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F43F1F
#F43F1F
oklch(63.7% 0.221 32.3)
- #009CB3
#009CB3
oklch(63.6% 0.111 212.9)
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 #F43F1F, closest first.
No curated palette has a color within ΔE 0.04 of #F43F1F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.013
- Vermillion #F4320C ΔE 0.015
- Red Orange #FD3C06 ΔE 0.018
- Orangered #FE420F ΔE 0.022
- Orange Red #FF4500 ΔE 0.027
- Tomato Red #EC2D01 ΔE 0.029
- Blood Orange #FE4B03 ΔE 0.032
- Fire Engine Red #FE0002 ΔE 0.039
Use #F43F1F 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.