#6C8198
Closest named color: Slate Gray (#708090). oklch(59.5% 0.043 250.9), rgb(108, 129, 152).
Aa
Black text reads best on this color (5.23:1).
About this color
#6C8198 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.043 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.012 away. Black text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.23:1 |
| White text | 4.01:1 |
Values
| HEX | #6C8198 |
| RGB | rgb(108, 129, 152) |
| HSL | hsl(211, 18%, 51%) |
| OKLCH | oklch(59.5% 0.043 250.9) |
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 #6C8198 | 4.01:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #6C8198 | 5.23:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #6C8198 text on white | 4.01:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #6C8198 text on black | 5.23:1 | AA | Lc -34.2 | 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
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE1
oklch(88.6% 0.012 252.1)
-
Step 300
300
#B7C2CE
oklch(80.9% 0.021 250.4)
-
Step 400
400
#92A3B5
oklch(70.8% 0.033 249.8)
-
Step 500
500 (this color)
#6C8198
oklch(59.5% 0.043 250.9)
-
Step 600
600
#5F768E
oklch(55.7% 0.046 249.8)
-
Step 700
700
#4E6379
oklch(49.1% 0.044 249.9)
-
Step 800
800
#405162
oklch(42.7% 0.035 248.7)
-
Step 900
900
#374350
oklch(37.8% 0.027 250.6)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#6C8198 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) | #798199 | 0.018 |
| Deuteranopia (no green cones) | #737D98 | 0.014 |
| Tritanopia (no blue cones) | #5F8688 | 0.037 |
| Achromatopsia (no color) | #7F7F7F | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C8198
#6C8198
oklch(59.5% 0.043 250.9)
- #8F7B63
#8F7B63
oklch(59.5% 0.043 71.9)
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 #6C8198, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.012
- Steel #738595 ΔE 0.017
- Grey Blue #647D8E ΔE 0.021
- Steel Grey #6F828A ΔE 0.023
- Lavender Gray #7E7F9A ΔE 0.026
- Light Slate Gray #778899 ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.035
Use #6C8198 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.