#678FB6
Closest named color: Faded Blue (#658CBB). oklch(63.6% 0.074 248.4), rgb(103, 143, 182).
Aa
Black text reads best on this color (6.18:1).
About this color
#678FB6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.074 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.013 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #678FB6 |
| RGB | rgb(103, 143, 182) |
| HSL | hsl(210, 35%, 56%) |
| OKLCH | oklch(63.6% 0.074 248.4) |
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 #678FB6 | 3.39:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #678FB6 | 6.18:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #678FB6 text on white | 3.39:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #678FB6 text on black | 6.18:1 | AA | Lc -40.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AFC3D7
oklch(80.8% 0.036 248.3)
-
Step 400
400
#85A4C4
oklch(70.7% 0.058 249.5)
-
Step 500
500 (this color)
#678FB6
oklch(63.6% 0.074 248.4)
-
Step 600
600
#4C77A0
oklch(55.5% 0.08 248.3)
-
Step 700
700
#3D6489
oklch(49.1% 0.074 248.3)
-
Step 800
800
#33526F
oklch(42.8% 0.061 247.8)
-
Step 900
900
#2D445A
oklch(37.8% 0.048 248.1)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#678FB6 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) | #7F90B8 | 0.031 |
| Deuteranopia (no green cones) | #7688B5 | 0.025 |
| Tritanopia (no blue cones) | #48989C | 0.063 |
| Achromatopsia (no color) | #8B8B8B | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678FB6
#678FB6
oklch(63.6% 0.074 248.4)
- #A98359
#A98359
oklch(63.7% 0.074 68.6)
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 #678FB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.013
- Silver Lake Blue #778DA9 ΔE 0.025
- Blue Grey #758DA3 ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.032
- Off Blue #5684AE ΔE 0.039
- Light Slate Gray #778899 ΔE 0.045
- Cool Blue #4984B8 ΔE 0.048
- Steel #738595 ΔE 0.050
Use #678FB6 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.