#688396
Closest named color: Slate Gray (#708090). oklch(59.6% 0.043 239.1), rgb(104, 131, 150).
Aa
Black text reads best on this color (5.27:1).
About this color
#688396 is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.043 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.013 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #688396 |
| RGB | rgb(104, 131, 150) |
| HSL | hsl(205, 18%, 50%) |
| OKLCH | oklch(59.6% 0.043 239.1) |
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 #688396 | 3.98:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #688396 | 5.27:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #688396 text on white | 3.98:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #688396 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D2DAE0
oklch(88.4% 0.012 239.9)
-
Step 300
300
#B5C3CD
oklch(80.9% 0.021 238.7)
-
Step 400
400
#8EA4B3
oklch(70.7% 0.033 237.8)
-
Step 500
500 (this color)
#688396
oklch(59.6% 0.043 239.1)
-
Step 600
600
#5A778C
oklch(55.5% 0.047 240.1)
-
Step 700
700
#4A6477
oklch(49% 0.043 240.5)
-
Step 800
800
#3D5261
oklch(42.7% 0.036 239.7)
-
Step 900
900
#34444F
oklch(37.7% 0.028 238.5)
-
Step 950
950
#1F282E
oklch(27.1% 0.017 237.4)
#688396 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) | #7B8297 | 0.026 |
| Deuteranopia (no green cones) | #757D96 | 0.023 |
| Tritanopia (no blue cones) | #5A8889 | 0.034 |
| Achromatopsia (no color) | #7F7F7F | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688396
#688396
oklch(59.6% 0.043 239.1)
- #937966
#937966
oklch(59.6% 0.043 58)
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 #688396, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.013
- Steel #738595 ΔE 0.016
- Steel Grey #6F828A ΔE 0.019
- Grey Blue #647D8E ΔE 0.020
- Light Slate Gray #778899 ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.028
- Lavender Gray #7E7F9A ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.036
Use #688396 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.