#64571F
Closest named color: Olive Brown (#645403). oklch(45.8% 0.076 96.1), rgb(100, 87, 31).
Aa
White text reads best on this color (7.17:1).
About this color
#64571F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 46%, its chroma 0.076 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.017 away. White text reads best on it, at 7.17:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #64571F |
| RGB | rgb(100, 87, 31) |
| HSL | hsl(49, 53%, 26%) |
| OKLCH | oklch(45.8% 0.076 96.1) |
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 #64571F | 7.17:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #64571F | 2.92:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #64571F text on white | 7.17:1 | AAA | Lc 84.8 | Fine for body text |
| #64571F text on black | 2.92:1 | Fails | Lc -17.2 | 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 800.
-
Step 50
50
#F6F5F1
oklch(97% 0.005 95.1)
-
Step 100
100
#ECEAE0
oklch(93.6% 0.013 97.4)
-
Step 200
200
#DED9C7
oklch(88.4% 0.025 94.1)
-
Step 300
300
#C9C1A1
oklch(80.9% 0.044 95.6)
-
Step 400
400
#AEA16D
oklch(70.8% 0.072 95.8)
-
Step 500
500
#9A8945
oklch(63.1% 0.091 95.6)
-
Step 600
600
#857323
oklch(55.7% 0.1 96.1)
-
Step 700
700
#706015
oklch(49.1% 0.092 96.4)
-
Step 800
800 (this color)
#64571F
oklch(45.8% 0.076 96.1)
-
Step 900
900
#4B4119
oklch(37.6% 0.059 95.4)
-
Step 950
950
#2C2610
oklch(26.9% 0.037 94.5)
#64571F 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) | #605518 | 0.011 |
| Deuteranopia (no green cones) | #635922 | 0.006 |
| Tritanopia (no blue cones) | #6C504B | 0.070 |
| Achromatopsia (no color) | #575757 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64571F
#64571F
oklch(45.8% 0.076 96.1)
- #4C5382
#4C5382
oklch(45.7% 0.077 276.4)
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 #64571F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.017
- Mud #735C12 ΔE 0.032
- Greeny Brown #696006 ΔE 0.035
- Green Brown #544E03 ΔE 0.044
- Army Green #4B5D16 ΔE 0.046
- Camo Green #526525 ΔE 0.047
- Medium Brown #7F5112 ΔE 0.049
- Mud Brown #60460F ΔE 0.049
Use #64571F 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.