#678097
Closest named color: Slate Gray (#708090). oklch(58.9% 0.046 246.4), rgb(103, 128, 151).
Aa
Black text reads best on this color (5.11:1).
About this color
#678097 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.046 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.015 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #678097 |
| RGB | rgb(103, 128, 151) |
| HSL | hsl(209, 19%, 50%) |
| OKLCH | oklch(58.9% 0.046 246.4) |
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 #678097 | 4.10:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #678097 | 5.11:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #678097 text on white | 4.10:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #678097 text on black | 5.11:1 | AA | Lc -33.5 | 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 600.
-
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
#D3DAE0
oklch(88.5% 0.011 243.7)
-
Step 300
300
#B6C2CD
oklch(80.8% 0.02 245.7)
-
Step 400
400
#91A3B4
oklch(70.7% 0.032 246.7)
-
Step 500
500
#758CA2
oklch(63% 0.042 247.3)
-
Step 600
600 (this color)
#678097
oklch(58.9% 0.046 246.4)
-
Step 700
700
#4D6378
oklch(49% 0.043 247.5)
-
Step 800
800
#3F5161
oklch(42.6% 0.035 245.6)
-
Step 900
900
#364350
oklch(37.7% 0.028 248.6)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#678097 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) | #778098 | 0.022 |
| Deuteranopia (no green cones) | #717B97 | 0.019 |
| Tritanopia (no blue cones) | #588587 | 0.038 |
| Achromatopsia (no color) | #7D7D7D | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678097
#678097
oklch(58.9% 0.046 246.4)
- #907860
#907860
oklch(58.9% 0.046 66.7)
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 #678097, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.015
- Grey Blue #647D8E ΔE 0.015
- Steel #738595 ΔE 0.023
- Steel Grey #6F828A ΔE 0.025
- Battleship Grey #6B7C85 ΔE 0.027
- Lavender Gray #7E7F9A ΔE 0.032
- Light Slate Gray #778899 ΔE 0.033
- Stormy Blue #507B9C ΔE 0.034
Use #678097 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.