#BB423A
Closest named color: Dull Red (#BB3F3F). oklch(54.7% 0.158 27.3), rgb(187, 66, 58).
Aa
White text reads best on this color (5.31:1).
About this color
#BB423A is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.158 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.010 away. White text reads best on it, at 5.31:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #BB423A |
| RGB | rgb(187, 66, 58) |
| HSL | hsl(4, 53%, 48%) |
| OKLCH | oklch(54.7% 0.158 27.3) |
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 #BB423A | 5.31:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #BB423A | 3.95:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #BB423A text on white | 5.31:1 | AA | Lc 75.5 | Fine for body text |
| #BB423A text on black | 3.95:1 | AA large text | Lc -26.2 | 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
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F2D0CB
oklch(88.5% 0.039 27.8)
-
Step 300
300
#EBB0A8
oklch(81% 0.07 27.5)
-
Step 400
400
#DE8479
oklch(70.7% 0.113 27.7)
-
Step 500
500
#D36257
oklch(63.2% 0.145 27.6)
-
Step 600
600 (this color)
#BB423A
oklch(54.7% 0.158 27.3)
-
Step 700
700
#A4352F
oklch(49.1% 0.147 27)
-
Step 800
800
#852D27
oklch(42.7% 0.122 27.3)
-
Step 900
900
#6B2A24
oklch(37.7% 0.094 27.7)
-
Step 950
950
#3F1916
oklch(27% 0.06 26.4)
#BB423A 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) | #635B38 | 0.167 |
| Deuteranopia (no green cones) | #817536 | 0.154 |
| Tritanopia (no blue cones) | #CD2441 | 0.051 |
| Achromatopsia (no color) | #6B6B6B | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB423A
#BB423A
oklch(54.7% 0.158 27.3)
- #00808D
#00808D
oklch(54.8% 0.094 207.2)
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 #BB423A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.010
- Dusty Red #B9484E ΔE 0.024
- Sinopia #BB3E03 ΔE 0.037
- Dark Rose #B5485D ΔE 0.045
- Brick Orange #C14A09 ΔE 0.045
- Rusty Red #AF2F0D ΔE 0.052
- Burnt Orange #C04E01 ΔE 0.052
- Firebrick #B22222 ΔE 0.055
Use #BB423A 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.