#907171
Closest named color: Reddish Grey (#997570). oklch(57.9% 0.039 18.4), rgb(144, 113, 113).
Aa
Black text reads best on this color (4.78:1).
About this color
#907171 is a medium-dark, muted red. In OKLCH its lightness is 58%, its chroma 0.039 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Reddish Grey (#997570), ΔE 0.020 away. Black text reads best on it, at 4.78:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Reddish Grey (#997570) |
| Black text | 4.78:1 |
| White text | 4.38:1 |
Values
| HEX | #907171 |
| RGB | rgb(144, 113, 113) |
| HSL | hsl(0, 12%, 50%) |
| OKLCH | oklch(57.9% 0.039 18.4) |
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 #907171 | 4.38:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #907171 | 4.78:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #907171 text on white | 4.38:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #907171 text on black | 4.78:1 | AA | Lc -31.3 | Non-text elements, placeholder text |
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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E8
oklch(93.5% 0.005 17.3)
-
Step 200
200
#E0D7D6
oklch(88.6% 0.01 25.1)
-
Step 300
300
#CCBCBC
oklch(80.9% 0.018 17.5)
-
Step 400
400
#B29A9A
oklch(70.7% 0.029 17.8)
-
Step 500
500
#9E8181
oklch(63% 0.036 18.1)
-
Step 600
600 (this color)
#907171
oklch(57.9% 0.039 18.4)
-
Step 700
700
#745959
oklch(49.2% 0.036 18.4)
-
Step 800
800
#5F4949
oklch(42.9% 0.03 18.4)
-
Step 900
900
#4D3D3D
oklch(37.7% 0.022 18.2)
-
Step 950
950
#2D2424
oklch(27.1% 0.014 18)
#907171 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) | #767571 | 0.042 |
| Deuteranopia (no green cones) | #7E7B71 | 0.038 |
| Tritanopia (no blue cones) | #976E71 | 0.014 |
| Achromatopsia (no color) | #787878 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #907171
#907171
oklch(57.9% 0.039 18.4)
- #5F8182
#5F8182
oklch(57.8% 0.038 198.4)
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 #907171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddish Grey #997570 ΔE 0.020
- Purple Grey #866F85 ΔE 0.036
- Medium Grey #7D7F7C ΔE 0.044
- Gray #808080 ΔE 0.045
- Grey Purple #826D8C ΔE 0.052
- Grey Brown #7F7053 ΔE 0.054
- English Lavender #9D8189 ΔE 0.055
- Mocha #9D7651 ΔE 0.055
Use #907171 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.