#BB0023
Closest named color: Scarlet (#BE0119). oklch(50% 0.202 23.5), rgb(187, 0, 35).
Aa
White text reads best on this color (6.69:1).
About this color
#BB0023 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.202 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.011 away. White text reads best on it, at 6.69:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.202) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #BB0023 |
| RGB | rgb(187, 0, 35) |
| HSL | hsl(349, 100%, 37%) |
| OKLCH | oklch(50% 0.202 23.5) |
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 #BB0023 | 6.69:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #BB0023 | 3.13:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #BB0023 text on white | 6.69:1 | AA | Lc 80.3 | Fine for body text |
| #BB0023 text on black | 3.13:1 | AA large text | Lc -21.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#FAA8A2
oklch(81% 0.098 24.1)
-
Step 400
400
#F27471
oklch(70.6% 0.156 23.2)
-
Step 500
500
#EA464B
oklch(63.1% 0.2 23.4)
-
Step 600
600
#D5142E
oklch(55.6% 0.217 23.4)
-
Step 700
700 (this color)
#BB0023
oklch(50% 0.202 23.5)
-
Step 800
800
#95091D
oklch(42.6% 0.167 23.3)
-
Step 900
900
#78181D
oklch(37.8% 0.13 23.6)
-
Step 950
950
#471112
oklch(27.1% 0.082 23.5)
#BB0023 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) | #4C4422 | 0.224 |
| Deuteranopia (no green cones) | #75691A | 0.204 |
| Tritanopia (no blue cones) | #CF0015 | 0.044 |
| Achromatopsia (no color) | #5C5C5C | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB0023
#BB0023
oklch(50% 0.202 23.5)
- #007179
#007179
oklch(50% 0.085 203.4)
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 #BB0023, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.011
- Lipstick Red #C0022F ΔE 0.016
- Firebrick #B22222 ΔE 0.025
- Rose Red #BE013C ΔE 0.029
- Rufous #AE2012 ΔE 0.034
- Rouge #AB1239 ΔE 0.040
- Cherry #CF0234 ΔE 0.045
- Brown #A52A2A ΔE 0.047
Use #BB0023 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.