#973537
Closest named color: Brick (#A03623). oklch(47.1% 0.132 22.5), rgb(151, 53, 55).
Aa
White text reads best on this color (7.29:1).
About this color
#973537 is a medium-dark, moderately saturated red. In OKLCH its lightness is 47%, its chroma 0.132 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.030 away. White text reads best on it, at 7.29:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.132) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 2.88:1 |
| White text | 7.29:1 |
Values
| HEX | #973537 |
| RGB | rgb(151, 53, 55) |
| HSL | hsl(359, 48%, 40%) |
| OKLCH | oklch(47.1% 0.132 22.5) |
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 #973537 | 7.29:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #973537 | 2.88:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #973537 text on white | 7.29:1 | AAA | Lc 84.5 | Fine for body text |
| #973537 text on black | 2.88:1 | Fails | Lc -17.5 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F6E5E4
oklch(93.5% 0.019 21.6)
-
Step 200
200
#F0D1CE
oklch(88.6% 0.035 24.4)
-
Step 300
300
#E7B1AE
oklch(80.9% 0.063 22.2)
-
Step 400
400
#D98783
oklch(70.8% 0.101 23)
-
Step 500
500
#CC6664
oklch(63% 0.13 22.6)
-
Step 600
600
#B84B4B
oklch(55.7% 0.142 22.8)
-
Step 700
700 (this color)
#973537
oklch(47.1% 0.132 22.5)
-
Step 800
800
#803232
oklch(42.7% 0.109 22.8)
-
Step 900
900
#672D2C
oklch(37.7% 0.084 22.9)
-
Step 950
950
#3D1B1A
oklch(27.1% 0.054 23)
#973537 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) | #4E4936 | 0.142 |
| Deuteranopia (no green cones) | #675E34 | 0.130 |
| Tritanopia (no blue cones) | #A62037 | 0.039 |
| Achromatopsia (no color) | #565656 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #973537
#973537
oklch(47.1% 0.132 22.5)
- #00686F
#00686F
oklch(47.1% 0.08 202.9)
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 #973537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.030
- Auburn #9B2226 ΔE 0.030
- Brown #A52A2A ΔE 0.031
- Burnt Red #9F2305 ΔE 0.044
- Red Brown #8B2E16 ΔE 0.045
- Brown Red #922B05 ΔE 0.046
- Russet #A13905 ΔE 0.050
- Rust Red #AA2704 ΔE 0.052
Use #973537 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.