#B0323B
Closest named color: Firebrick (#B22222). oklch(51.1% 0.162 21.2), rgb(176, 50, 59).
Aa
White text reads best on this color (6.23:1).
About this color
#B0323B is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.162 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.028 away. White text reads best on it, at 6.23:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.36:1 |
| White text | 6.23:1 |
Values
| HEX | #B0323B |
| RGB | rgb(176, 50, 59) |
| HSL | hsl(356, 56%, 44%) |
| OKLCH | oklch(51.1% 0.162 21.2) |
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 #B0323B | 6.23:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #B0323B | 3.36:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #B0323B text on white | 6.23:1 | AA | Lc 80.0 | Fine for body text |
| #B0323B text on black | 3.36:1 | AA large text | Lc -21.9 | 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 700.
-
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
#EFADAB
oklch(80.9% 0.078 20.9)
-
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
#C43A44
oklch(55.5% 0.174 21)
-
Step 700
700 (this color)
#B0323B
oklch(51.1% 0.162 21.2)
-
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)
#B0323B 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) | #554F3A | 0.176 |
| Deuteranopia (no green cones) | #756A37 | 0.161 |
| Tritanopia (no blue cones) | #C10736 | 0.043 |
| Achromatopsia (no color) | #616161 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0323B
#B0323B
oklch(51.1% 0.162 21.2)
- #00757B
#00757B
oklch(51.2% 0.087 201.1)
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 #B0323B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.028
- Brown #A52A2A ΔE 0.033
- Dull Red #BB3F3F ΔE 0.035
- Rufous #AE2012 ΔE 0.040
- Rusty Red #AF2F0D ΔE 0.040
- Rouge #AB1239 ΔE 0.042
- Lipstick Red #C0022F ΔE 0.043
- Brick #A03623 ΔE 0.044
Use #B0323B 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.