#FB3300
Closest named color: Red Orange (#FD3C06). oklch(63.9% 0.237 32.7), rgb(251, 51, 0).
Aa
Black text reads best on this color (5.57:1).
About this color
#FB3300 is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.237 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Red Orange (#FD3C06), ΔE 0.012 away. Black text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.237) |
| Temperature | warm |
| Nearest name | Red Orange (#FD3C06) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #FB3300 |
| RGB | rgb(251, 51, 0) |
| HSL | hsl(12, 100%, 49%) |
| OKLCH | oklch(63.9% 0.237 32.7) |
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 #FB3300 | 3.76:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #FB3300 | 5.57:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #FB3300 text on white | 3.76:1 | AA large text | Lc 63.2 | Content text, not long reading |
| #FB3300 text on black | 5.57:1 | AA | Lc -38.4 | 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
#FFE3DC
oklch(93.7% 0.032 34.3)
-
Step 200
200
#FFCBC0
oklch(88.5% 0.061 32.1)
-
Step 300
300
#FFA693
oklch(80.9% 0.11 32.7)
-
Step 400
400
#FF6B4F
oklch(70.7% 0.186 32.6)
-
Step 500
500 (this color)
#FB3300
oklch(63.9% 0.237 32.7)
-
Step 600
600
#D12900
oklch(55.7% 0.207 32.8)
-
Step 700
700
#B12100
oklch(49.2% 0.183 32.8)
-
Step 800
800
#921900
oklch(42.7% 0.159 32.7)
-
Step 900
900
#7B1400
oklch(37.7% 0.14 32.8)
-
Step 950
950
#4C0A01
oklch(27.1% 0.098 32.8)
#FB3300 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) | #766700 | 0.252 |
| Deuteranopia (no green cones) | #A69300 | 0.225 |
| Tritanopia (no blue cones) | #FF002E | 0.040 |
| Achromatopsia (no color) | #838383 | 0.239 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FB3300
#FB3300
oklch(63.9% 0.237 32.7)
- #009DB4
#009DB4
oklch(63.9% 0.112 212.8)
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 #FB3300, closest first.
No curated palette has a color within ΔE 0.04 of #FB3300.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Orange #FD3C06 ΔE 0.012
- Vermillion #F4320C ΔE 0.014
- Orangey Red #FA4224 ΔE 0.018
- Orangered #FE420F ΔE 0.019
- Orange Red #FF4500 ΔE 0.025
- Red #FF0000 ΔE 0.028
- Fire Engine Red #FE0002 ΔE 0.028
- Bright Red #FF000D ΔE 0.029
Use #FB3300 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.