#688ABB
Closest named color: Faded Blue (#658CBB). oklch(62.8% 0.084 257.5), rgb(104, 138, 187).
Aa
Black text reads best on this color (5.94:1).
About this color
#688ABB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.084 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.006 away. Black text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #688ABB |
| RGB | rgb(104, 138, 187) |
| HSL | hsl(215, 38%, 57%) |
| OKLCH | oklch(62.8% 0.084 257.5) |
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 #688ABB | 3.53:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #688ABB | 5.94:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #688ABB text on white | 3.53:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #688ABB text on black | 5.94:1 | AA | Lc -38.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B0C2DC
oklch(80.9% 0.042 257.5)
-
Step 400
400
#87A2CA
oklch(70.6% 0.066 258.1)
-
Step 500
500 (this color)
#688ABB
oklch(62.8% 0.084 257.5)
-
Step 600
600
#5074A8
oklch(55.5% 0.091 257.5)
-
Step 700
700
#416290
oklch(49.2% 0.084 256.9)
-
Step 800
800
#365075
oklch(42.8% 0.07 257.2)
-
Step 900
900
#2F425F
oklch(37.7% 0.056 258.6)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#688ABB 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) | #788DBD | 0.023 |
| Deuteranopia (no green cones) | #6E85BA | 0.015 |
| Tritanopia (no blue cones) | #48959B | 0.075 |
| Achromatopsia (no color) | #888888 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688ABB
#688ABB
oklch(62.8% 0.084 257.5)
- #A5824B
#A5824B
oklch(62.8% 0.084 77.6)
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 #688ABB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.006
- Dusty Blue #5A86AD ΔE 0.029
- Off Blue #5684AE ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.040
- Blue Grey #758DA3 ΔE 0.043
- Steel Blue #4682B4 ΔE 0.046
- Light Slate Gray #778899 ΔE 0.053
Use #688ABB 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.