#64708E
Closest named color: Metallic Blue (#4F738E). oklch(54.7% 0.049 267.8), rgb(100, 112, 142).
Aa
White text reads best on this color (4.94:1).
About this color
#64708E is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.049 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.027 away. White text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.25:1 |
| White text | 4.94:1 |
Values
| HEX | #64708E |
| RGB | rgb(100, 112, 142) |
| HSL | hsl(223, 17%, 47%) |
| OKLCH | oklch(54.7% 0.049 267.8) |
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 #64708E | 4.94:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #64708E | 4.25:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #64708E text on white | 4.94:1 | AA | Lc 74.2 | Content text, not long reading |
| #64708E text on black | 4.25:1 | AA large text | Lc -27.5 | 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 600.
-
Step 50
50
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0CF
oklch(80.8% 0.022 268.4)
-
Step 400
400
#97A0B7
oklch(70.6% 0.035 268.5)
-
Step 500
500
#7D89A6
oklch(63.1% 0.046 267.4)
-
Step 600
600 (this color)
#64708E
oklch(54.7% 0.049 267.8)
-
Step 700
700
#55607B
oklch(49% 0.046 267.4)
-
Step 800
800
#464F64
oklch(42.8% 0.037 266.7)
-
Step 900
900
#3B4152
oklch(37.7% 0.03 269.7)
-
Step 950
950
#222630
oklch(26.9% 0.02 267.9)
#64708E 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) | #67728F | 0.008 |
| Deuteranopia (no green cones) | #636F8D | 0.003 |
| Tritanopia (no blue cones) | #59767A | 0.044 |
| Achromatopsia (no color) | #707070 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64708E
#64708E
oklch(54.7% 0.049 267.8)
- #7D6F4F
#7D6F4F
oklch(54.6% 0.05 87)
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 #64708E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.027
- Battleship Gray #6C757D ΔE 0.036
- Dull Blue #49759C ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Grey Blue #647D8E ΔE 0.039
- Battleship Grey #6B7C85 ΔE 0.044
- Cerulean #457B9D ΔE 0.045
- Grey Purple #826D8C ΔE 0.045
Use #64708E 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.