#64677E
Closest named color: Slate (#516572). oklch(52% 0.036 279.2), rgb(100, 103, 126).
Aa
White text reads best on this color (5.55:1).
About this color
#64677E is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.036 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.035 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #64677E |
| RGB | rgb(100, 103, 126) |
| HSL | hsl(233, 12%, 44%) |
| OKLCH | oklch(52% 0.036 279.2) |
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 #64677E | 5.55:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #64677E | 3.78:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #64677E text on white | 5.55:1 | AA | Lc 77.7 | Fine for body text |
| #64677E text on black | 3.78:1 | AA large text | Lc -24.0 | 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 700.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D7D8E0
oklch(88.4% 0.011 280.5)
-
Step 300
300
#BEC0CC
oklch(81% 0.017 278.4)
-
Step 400
400
#9C9FB2
oklch(70.6% 0.028 278.5)
-
Step 500
500
#8488A0
oklch(63.2% 0.036 277.8)
-
Step 600
600
#6E718A
oklch(55.5% 0.039 279.7)
-
Step 700
700 (this color)
#64677E
oklch(52% 0.036 279.2)
-
Step 800
800
#4B4E60
oklch(42.8% 0.03 277.6)
-
Step 900
900
#3F404E
oklch(37.6% 0.024 282)
-
Step 950
950
#25262E
oklch(27.1% 0.015 279.7)
#64677E 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) | #61697F | 0.007 |
| Deuteranopia (no green cones) | #60677D | 0.006 |
| Tritanopia (no blue cones) | #5E6B6F | 0.032 |
| Achromatopsia (no color) | #686868 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64677E
#64677E
oklch(52% 0.036 279.2)
- #6E6A51
#6E6A51
oklch(52.1% 0.038 100)
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 #64677E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.035
- Dim Gray #696969 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.042
- Battleship Gray #6C757D ΔE 0.045
- Dusty Grape #545775 ΔE 0.055
- Grey Purple #826D8C ΔE 0.056
- Dusty Purple #825F87 ΔE 0.056
- Dull Blue #49759C ΔE 0.058
Use #64677E 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.