#B1423F
Closest named color: Dull Red (#BB3F3F). oklch(53.2% 0.146 24.9), rgb(177, 66, 63).
Aa
White text reads best on this color (5.64:1).
About this color
#B1423F is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.146 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.019 away. White text reads best on it, at 5.64:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.72:1 |
| White text | 5.64:1 |
Values
| HEX | #B1423F |
| RGB | rgb(177, 66, 63) |
| HSL | hsl(2, 48%, 47%) |
| OKLCH | oklch(53.2% 0.146 24.9) |
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 #B1423F | 5.64:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #B1423F | 3.72:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #B1423F text on white | 5.64:1 | AA | Lc 77.4 | Fine for body text |
| #B1423F text on black | 3.72:1 | AA large text | Lc -24.3 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E5E3
oklch(93.5% 0.019 25.6)
-
Step 200
200
#F1D0CD
oklch(88.5% 0.037 24)
-
Step 300
300
#E8B1AB
oklch(80.9% 0.065 25.7)
-
Step 400
400
#DA867F
oklch(70.6% 0.105 25.2)
-
Step 500
500
#CE655F
oklch(63.1% 0.134 25)
-
Step 600
600 (this color)
#B1423F
oklch(53.2% 0.146 24.9)
-
Step 700
700
#9F3A37
oklch(49% 0.135 25.1)
-
Step 800
800
#81312E
oklch(42.7% 0.112 25.1)
-
Step 900
900
#682C29
oklch(37.6% 0.087 25)
-
Step 950
950
#3D1A18
oklch(26.8% 0.055 24.8)
#B1423F 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) | #5F583E | 0.155 |
| Deuteranopia (no green cones) | #7B703C | 0.143 |
| Tritanopia (no blue cones) | #C22A42 | 0.045 |
| Achromatopsia (no color) | #676767 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1423F
#B1423F
oklch(53.2% 0.146 24.9)
- #007B85
#007B85
oklch(53.2% 0.091 204.8)
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 #B1423F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.019
- Dusty Red #B9484E ΔE 0.026
- Dark Rose #B5485D ΔE 0.040
- Light Maroon #A24857 ΔE 0.041
- Light Burgundy #A8415B ΔE 0.044
- Sinopia #BB3E03 ΔE 0.047
- Rusty Red #AF2F0D ΔE 0.047
- Firebrick #B22222 ΔE 0.049
Use #B1423F 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.