#BB313C
Closest named color: Dull Red (#BB3F3F). oklch(52.9% 0.174 21.4), rgb(187, 49, 60).
Aa
White text reads best on this color (5.80:1).
About this color
#BB313C is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.174 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.022 away. White text reads best on it, at 5.80:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #BB313C |
| RGB | rgb(187, 49, 60) |
| HSL | hsl(355, 58%, 46%) |
| OKLCH | oklch(52.9% 0.174 21.4) |
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 #BB313C | 5.80:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #BB313C | 3.61:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #BB313C text on white | 5.80:1 | AA | Lc 77.8 | Fine for body text |
| #BB313C text on black | 3.61:1 | AA large text | Lc -24.0 | 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 600.
-
Step 50
50
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F5CECD
oklch(88.4% 0.044 19.8)
-
Step 300
300
#EFADAA
oklch(80.9% 0.078 21.9)
-
Step 400
400
#E47F7E
oklch(70.7% 0.125 21.3)
-
Step 500
500
#D95A5D
oklch(63.1% 0.16 21.5)
-
Step 600
600 (this color)
#BB313C
oklch(52.9% 0.174 21.4)
-
Step 700
700
#A92B35
oklch(49% 0.162 21.5)
-
Step 800
800
#89262D
oklch(42.6% 0.133 21.1)
-
Step 900
900
#6F2528
oklch(37.8% 0.105 21.3)
-
Step 950
950
#411718
oklch(27% 0.066 21.1)
#BB313C 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) | #59533B | 0.189 |
| Deuteranopia (no green cones) | #7B7038 | 0.174 |
| Tritanopia (no blue cones) | #CD0036 | 0.043 |
| Achromatopsia (no color) | #656565 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB313C
#BB313C
oklch(52.9% 0.174 21.4)
- #007B81
#007B81
oklch(53% 0.09 200.8)
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 #BB313C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.022
- Lipstick Red #C0022F ΔE 0.036
- Firebrick #B22222 ΔE 0.037
- Dusty Red #B9484E ΔE 0.038
- Rose Red #BE013C ΔE 0.040
- Scarlet #BE0119 ΔE 0.042
- Cherry #CF0234 ΔE 0.044
- Ruby #CA0147 ΔE 0.048
Use #BB313C 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.