#646751
Closest named color: Dim Gray (#696969). oklch(50.5% 0.034 113.9), rgb(100, 103, 81).
Aa
White text reads best on this color (5.83:1).
About this color
#646751 is a medium-dark, muted yellow. In OKLCH its lightness is 50%, its chroma 0.034 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.037 away. White text reads best on it, at 5.83:1.
| Hue family | Yellows |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.60:1 |
| White text | 5.83:1 |
Values
| HEX | #646751 |
| RGB | rgb(100, 103, 81) |
| HSL | hsl(68, 12%, 36%) |
| OKLCH | oklch(50.5% 0.034 113.9) |
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 #646751 | 5.83:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #646751 | 3.60:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #646751 text on white | 5.83:1 | AA | Lc 79.2 | Fine for body text |
| #646751 text on black | 3.60:1 | AA large text | Lc -22.6 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#EAEAE7
oklch(93.6% 0.004 106.5)
-
Step 200
200
#D9DAD3
oklch(88.6% 0.01 113.2)
-
Step 300
300
#C0C2B6
oklch(80.9% 0.017 114.4)
-
Step 400
400
#A0A390
oklch(70.8% 0.027 114.4)
-
Step 500
500
#898C75
oklch(63.1% 0.033 113.4)
-
Step 600
600
#73765E
oklch(55.6% 0.036 113.4)
-
Step 700
700 (this color)
#646751
oklch(50.5% 0.034 113.9)
-
Step 800
800
#4E513F
oklch(42.7% 0.029 115.3)
-
Step 900
900
#414336
oklch(37.7% 0.022 114.5)
-
Step 950
950
#262720
oklch(26.9% 0.013 113.9)
#646751 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) | #6A6550 | 0.010 |
| Deuteranopia (no green cones) | #6A6552 | 0.011 |
| Tritanopia (no blue cones) | #676461 | 0.030 |
| Achromatopsia (no color) | #656565 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646751
#646751
oklch(50.5% 0.034 113.9)
- #656176
#656176
oklch(50.4% 0.033 293.9)
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 #646751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.037
- Dark Moss Green #606C38 ΔE 0.043
- Dark Taupe #7F684E ΔE 0.044
- Grey Brown #7F7053 ΔE 0.053
- Dirt Brown #836539 ΔE 0.055
- Dark Olive Green #556B2F ΔE 0.058
- Slate #516572 ΔE 0.058
- Cocoa #875F42 ΔE 0.059
Use #646751 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.