#6C819E
Closest named color: Slate Gray (#708090). oklch(59.7% 0.051 256.5), rgb(108, 129, 158).
Aa
Black text reads best on this color (5.27:1).
About this color
#6C819E is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.051 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.021 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #6C819E |
| RGB | rgb(108, 129, 158) |
| HSL | hsl(215, 20%, 52%) |
| OKLCH | oklch(59.7% 0.051 256.5) |
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 #6C819E | 3.98:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #6C819E | 5.27:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #6C819E text on white | 3.98:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #6C819E text on black | 5.27:1 | AA | Lc -34.5 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B7C2D1
oklch(81% 0.024 256.1)
-
Step 400
400
#91A2BA
oklch(70.7% 0.04 257)
-
Step 500
500 (this color)
#6C819E
oklch(59.7% 0.051 256.5)
-
Step 600
600
#5E7594
oklch(55.6% 0.056 256)
-
Step 700
700
#4E627E
oklch(49.1% 0.051 256.8)
-
Step 800
800
#405066
oklch(42.7% 0.042 256.4)
-
Step 900
900
#364253
oklch(37.6% 0.033 257.1)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#6C819E 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) | #77829F | 0.016 |
| Deuteranopia (no green cones) | #717D9D | 0.012 |
| Tritanopia (no blue cones) | #5D878B | 0.044 |
| Achromatopsia (no color) | #7F7F7F | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C819E
#6C819E
oklch(59.7% 0.051 256.5)
- #917C5D
#917C5D
oklch(59.8% 0.051 77.2)
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 #6C819E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.021
- Steel #738595 ΔE 0.023
- Lavender Gray #7E7F9A ΔE 0.025
- Grey Blue #647D8E ΔE 0.028
- Light Slate Gray #778899 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.029
- Steel Grey #6F828A ΔE 0.032
- Off Blue #5684AE ΔE 0.033
Use #6C819E 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.