#FB2300
Closest named color: Fire Engine Red (#FE0002). oklch(63% 0.246 31), rgb(251, 35, 0).
Aa
Black text reads best on this color (5.34:1).
About this color
#FB2300 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.246 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Fire Engine Red (#FE0002), ΔE 0.015 away. Black text reads best on it, at 5.34:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.246) |
| Temperature | warm |
| Nearest name | Fire Engine Red (#FE0002) |
| Black text | 5.34:1 |
| White text | 3.93:1 |
Values
| HEX | #FB2300 |
| RGB | rgb(251, 35, 0) |
| HSL | hsl(8, 100%, 49%) |
| OKLCH | oklch(63% 0.246 31) |
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 #FB2300 | 3.93:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #FB2300 | 5.34:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #FB2300 text on white | 3.93:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #FB2300 text on black | 5.34:1 | AA | Lc -37.3 | 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
#FFA695
oklch(80.9% 0.109 31.4)
-
Step 400
400
#FF6A53
oklch(70.6% 0.186 31)
-
Step 500
500 (this color)
#FB2300
oklch(63% 0.246 31)
-
Step 600
600
#D51C00
oklch(55.7% 0.217 31)
-
Step 700
700
#B41600
oklch(49.1% 0.191 31)
-
Step 800
800
#951000
oklch(42.7% 0.167 31)
-
Step 900
900
#7D0C00
oklch(37.6% 0.146 31)
-
Step 950
950
#4D0702
oklch(27.1% 0.102 30.7)
#FB2300 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) | #716300 | 0.265 |
| Deuteranopia (no green cones) | #A49100 | 0.235 |
| Tritanopia (no blue cones) | #FF0022 | 0.023 |
| Achromatopsia (no color) | #808080 | 0.247 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FB2300
#FB2300
oklch(63% 0.246 31)
- #009AAF
#009AAF
oklch(63% 0.11 211.6)
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 #FB2300, closest first.
No curated palette has a color within ΔE 0.04 of #FB2300.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fire Engine Red #FE0002 ΔE 0.015
- Red #FF0000 ΔE 0.015
- Vermillion #F4320C ΔE 0.015
- Bright Red #FF000D ΔE 0.016
- Red Orange #FD3C06 ΔE 0.025
- Tomato Red #EC2D01 ΔE 0.028
- Orangey Red #FA4224 ΔE 0.030
- Cherry Red #F7022A ΔE 0.030
Use #FB2300 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.