#668496
Closest named color: Slate Gray (#708090). oklch(59.7% 0.044 234.8), rgb(102, 132, 150).
Aa
Black text reads best on this color (5.30:1).
About this color
#668496 is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.044 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.016 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #668496 |
| RGB | rgb(102, 132, 150) |
| HSL | hsl(203, 19%, 49%) |
| OKLCH | oklch(59.7% 0.044 234.8) |
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 #668496 | 3.95:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #668496 | 5.30:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #668496 text on white | 3.95:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #668496 text on black | 5.30:1 | AA | Lc -34.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B4C3CD
oklch(80.9% 0.022 236.8)
-
Step 400
400
#8DA5B3
oklch(70.8% 0.034 233.5)
-
Step 500
500 (this color)
#668496
oklch(59.7% 0.044 234.8)
-
Step 600
600
#58788B
oklch(55.5% 0.047 234.8)
-
Step 700
700
#486576
oklch(49.1% 0.044 234.6)
-
Step 800
800
#3B5360
oklch(42.8% 0.036 232.4)
-
Step 900
900
#33444F
oklch(37.7% 0.029 236.9)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#668496 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) | #7C8397 | 0.029 |
| Deuteranopia (no green cones) | #757D96 | 0.027 |
| Tritanopia (no blue cones) | #57898A | 0.033 |
| Achromatopsia (no color) | #808080 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668496
#668496
oklch(59.7% 0.044 234.8)
- #957967
#957967
oklch(59.8% 0.044 54.4)
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 #668496, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.016
- Steel #738595 ΔE 0.017
- Steel Grey #6F828A ΔE 0.020
- Grey Blue #647D8E ΔE 0.021
- Light Slate Gray #778899 ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.036
- Lavender Gray #7E7F9A ΔE 0.036
Use #668496 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.