#688D9A
Closest named color: Light Slate Gray (#778899). oklch(62.1% 0.045 221.6), rgb(104, 141, 154).
Aa
Black text reads best on this color (5.86:1).
About this color
#688D9A is a medium-light, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.045 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.022 away. Black text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.86:1 |
| White text | 3.58:1 |
Values
| HEX | #688D9A |
| RGB | rgb(104, 141, 154) |
| HSL | hsl(196, 20%, 51%) |
| OKLCH | oklch(62.1% 0.045 221.6) |
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 #688D9A | 3.58:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #688D9A | 5.86:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #688D9A text on white | 3.58:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #688D9A text on black | 5.86:1 | AA | Lc -38.3 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B2C4CB
oklch(80.9% 0.022 223.1)
-
Step 400
400
#89A6B1
oklch(70.7% 0.036 222.8)
-
Step 500
500 (this color)
#688D9A
oklch(62.1% 0.045 221.6)
-
Step 600
600
#527A88
oklch(55.5% 0.05 221.9)
-
Step 700
700
#436773
oklch(49.1% 0.045 220.9)
-
Step 800
800
#37545E
oklch(42.7% 0.038 221.6)
-
Step 900
900
#30454D
oklch(37.6% 0.03 223.5)
-
Step 950
950
#1C292D
oklch(27.1% 0.019 218.7)
#688D9A 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) | #858B9B | 0.038 |
| Deuteranopia (no green cones) | #7D859A | 0.034 |
| Tritanopia (no blue cones) | #579191 | 0.028 |
| Achromatopsia (no color) | #878787 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688D9A
#688D9A
oklch(62.1% 0.045 221.6)
- #9F7E71
#9F7E71
oklch(62.1% 0.045 42.6)
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 #688D9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.022
- Blue Grey #758DA3 ΔE 0.023
- Steel #738595 ΔE 0.024
- Silver Lake Blue #778DA9 ΔE 0.031
- Steel Grey #6F828A ΔE 0.033
- Slate Gray #708090 ΔE 0.036
- Dusty Blue #5A86AD ΔE 0.044
- Grey Blue #647D8E ΔE 0.046
Use #688D9A 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.