#BC3742
Closest named color: Dull Red (#BB3F3F). oklch(53.8% 0.169 20.5), rgb(188, 55, 66).
Aa
White text reads best on this color (5.58:1).
About this color
#BC3742 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.169 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.015 away. White text reads best on it, at 5.58:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #BC3742 |
| RGB | rgb(188, 55, 66) |
| HSL | hsl(355, 55%, 48%) |
| OKLCH | oklch(53.8% 0.169 20.5) |
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 #BC3742 | 5.58:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #BC3742 | 3.76:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #BC3742 text on white | 5.58:1 | AA | Lc 76.7 | Fine for body text |
| #BC3742 text on black | 3.76:1 | AA large text | Lc -25.0 | 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
#F8E4E4
oklch(93.5% 0.022 17.6)
-
Step 200
200
#F4CFCD
oklch(88.5% 0.042 21.6)
-
Step 300
300
#EEADAC
oklch(80.8% 0.077 19.9)
-
Step 400
400
#E28080
oklch(70.7% 0.121 20.6)
-
Step 500
500
#D75C60
oklch(63.1% 0.155 20.7)
-
Step 600
600 (this color)
#BC3742
oklch(53.8% 0.169 20.5)
-
Step 700
700
#A72E39
oklch(49.1% 0.157 20.3)
-
Step 800
800
#88282F
oklch(42.7% 0.13 20.6)
-
Step 900
900
#6D262A
oklch(37.6% 0.101 20.1)
-
Step 950
950
#401719
oklch(26.9% 0.064 19.5)
#BC3742 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) | #5B5641 | 0.185 |
| Deuteranopia (no green cones) | #7D723E | 0.169 |
| Tritanopia (no blue cones) | #CE0D3C | 0.045 |
| Achromatopsia (no color) | #686868 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC3742
#BC3742
oklch(53.8% 0.169 20.5)
- #007E83
#007E83
oklch(53.9% 0.092 199.7)
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 #BC3742, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.015
- Dusty Red #B9484E ΔE 0.028
- Dark Rose #B5485D ΔE 0.039
- Lipstick Red #C0022F ΔE 0.045
- Firebrick #B22222 ΔE 0.047
- Rose Red #BE013C ΔE 0.047
- Cherry #CF0234 ΔE 0.048
- Light Burgundy #A8415B ΔE 0.049
Use #BC3742 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.