#B74540
Closest named color: Dull Red (#BB3F3F). oklch(54.5% 0.149 25.8), rgb(183, 69, 64).
Aa
White text reads best on this color (5.33:1).
About this color
#B74540 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.149 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.012 away. White text reads best on it, at 5.33:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #B74540 |
| RGB | rgb(183, 69, 64) |
| HSL | hsl(3, 48%, 48%) |
| OKLCH | oklch(54.5% 0.149 25.8) |
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 #B74540 | 5.33:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #B74540 | 3.93:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #B74540 text on white | 5.33:1 | AA | Lc 75.7 | Fine for body text |
| #B74540 text on black | 3.93:1 | AA large text | Lc -26.0 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F7E5E3
oklch(93.6% 0.02 25.2)
-
Step 200
200
#F1D0CC
oklch(88.4% 0.038 26.1)
-
Step 300
300
#E9B1AA
oklch(81% 0.067 26.8)
-
Step 400
400
#DC857E
oklch(70.7% 0.108 25.1)
-
Step 500
500
#CF645D
oklch(63% 0.137 25.5)
-
Step 600
600 (this color)
#B74540
oklch(54.5% 0.149 25.8)
-
Step 700
700
#A13935
oklch(49.2% 0.139 25.8)
-
Step 800
800
#82302C
oklch(42.6% 0.114 25.9)
-
Step 900
900
#692B28
oklch(37.6% 0.09 25.1)
-
Step 950
950
#3E1A18
oklch(27% 0.057 24.8)
#B74540 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) | #635C3F | 0.158 |
| Deuteranopia (no green cones) | #7F743D | 0.146 |
| Tritanopia (no blue cones) | #C82D45 | 0.047 |
| Achromatopsia (no color) | #6B6B6B | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B74540
#B74540
oklch(54.5% 0.149 25.8)
- #007F8B
#007F8B
oklch(54.5% 0.093 206.4)
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 #B74540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.012
- Dusty Red #B9484E ΔE 0.018
- Dark Rose #B5485D ΔE 0.038
- Sinopia #BB3E03 ΔE 0.043
- Light Maroon #A24857 ΔE 0.050
- Brick Orange #C14A09 ΔE 0.051
- Light Burgundy #A8415B ΔE 0.052
- Rusty Red #AF2F0D ΔE 0.055
Use #B74540 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.