#BB313F
Closest named color: Dull Red (#BB3F3F). oklch(53% 0.174 20.2), rgb(187, 49, 63).
Aa
White text reads best on this color (5.79:1).
About this color
#BB313F is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.174 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.023 away. White text reads best on it, at 5.79:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #BB313F |
| RGB | rgb(187, 49, 63) |
| HSL | hsl(354, 58%, 46%) |
| OKLCH | oklch(53% 0.174 20.2) |
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 #BB313F | 5.79:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #BB313F | 3.62:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #BB313F text on white | 5.79:1 | AA | Lc 77.7 | Fine for body text |
| #BB313F text on black | 3.62:1 | AA large text | Lc -24.1 | 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
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECD
oklch(88.4% 0.044 19.8)
-
Step 300
300
#EFADAC
oklch(80.9% 0.078 19.9)
-
Step 400
400
#E47F80
oklch(70.8% 0.125 20.1)
-
Step 500
500
#D95A60
oklch(63.1% 0.16 20.1)
-
Step 600
600 (this color)
#BB313F
oklch(53% 0.174 20.2)
-
Step 700
700
#A92B38
oklch(49.1% 0.162 20.1)
-
Step 800
800
#89262F
oklch(42.7% 0.133 19.9)
-
Step 900
900
#6F2529
oklch(37.8% 0.105 20.5)
-
Step 950
950
#411718
oklch(27% 0.066 21.1)
#BB313F 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) | #58533E | 0.191 |
| Deuteranopia (no green cones) | #7B703B | 0.174 |
| Tritanopia (no blue cones) | #CD0037 | 0.042 |
| Achromatopsia (no color) | #656565 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB313F
#BB313F
oklch(53% 0.174 20.2)
- #007B80
#007B80
oklch(53% 0.09 199.8)
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 #BB313F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.023
- Lipstick Red #C0022F ΔE 0.036
- Dusty Red #B9484E ΔE 0.037
- Rose Red #BE013C ΔE 0.038
- Firebrick #B22222 ΔE 0.039
- Scarlet #BE0119 ΔE 0.044
- Cherry #CF0234 ΔE 0.044
- Ruby #CA0147 ΔE 0.045
Use #BB313F 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.