#64677F
Closest named color: Slate (#516572). oklch(52% 0.038 279.4), rgb(100, 103, 127).
Aa
White text reads best on this color (5.54:1).
About this color
#64677F is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.038 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.036 away. White text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.78:1 |
| White text | 5.54:1 |
Values
| HEX | #64677F |
| RGB | rgb(100, 103, 127) |
| HSL | hsl(233, 12%, 45%) |
| OKLCH | oklch(52% 0.038 279.4) |
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 #64677F | 5.54:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #64677F | 3.78:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #64677F text on white | 5.54:1 | AA | Lc 77.7 | Fine for body text |
| #64677F text on black | 3.78:1 | AA large text | Lc -24.1 | 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
#BEC0CD
oklch(81% 0.018 279)
-
Step 400
400
#9C9FB3
oklch(70.7% 0.029 278.9)
-
Step 500
500
#8487A0
oklch(63% 0.038 279.9)
-
Step 600
600
#6E718B
oklch(55.6% 0.04 279.8)
-
Step 700
700 (this color)
#64677F
oklch(52% 0.038 279.4)
-
Step 800
800
#4B4D60
oklch(42.6% 0.032 280.3)
-
Step 900
900
#3F404F
oklch(37.7% 0.026 282.1)
-
Step 950
950
#25262E
oklch(27.1% 0.015 279.7)
#64677F 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) | #616980 | 0.007 |
| Deuteranopia (no green cones) | #5F677E | 0.008 |
| Tritanopia (no blue cones) | #5E6B6F | 0.033 |
| Achromatopsia (no color) | #686868 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64677F
#64677F
oklch(52% 0.038 279.4)
- #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 #64677F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.036
- Dim Gray #696969 ΔE 0.038
- Metallic Blue #4F738E ΔE 0.042
- Battleship Gray #6C757D ΔE 0.046
- Dusty Grape #545775 ΔE 0.055
- Dusty Purple #825F87 ΔE 0.055
- Grey Purple #826D8C ΔE 0.055
- Dull Blue #49759C ΔE 0.058
Use #64677F 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.