#678AB2
Closest named color: Faded Blue (#658CBB). oklch(62.3% 0.073 252.3), rgb(103, 138, 178).
Aa
Black text reads best on this color (5.85:1).
About this color
#678AB2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.073 and its hue 252°. 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 5.85:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.85:1 |
| White text | 3.58:1 |
Values
| HEX | #678AB2 |
| RGB | rgb(103, 138, 178) |
| HSL | hsl(212, 33%, 55%) |
| OKLCH | oklch(62.3% 0.073 252.3) |
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 #678AB2 | 3.58:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #678AB2 | 5.85:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #678AB2 text on white | 3.58:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #678AB2 text on black | 5.85:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D7
oklch(81% 0.035 251)
-
Step 400
400
#87A3C4
oklch(70.6% 0.058 252.8)
-
Step 500
500 (this color)
#678AB2
oklch(62.3% 0.073 252.3)
-
Step 600
600
#5176A0
oklch(55.6% 0.078 252.3)
-
Step 700
700
#416389
oklch(49.1% 0.073 252.1)
-
Step 800
800
#36516F
oklch(42.7% 0.06 251.8)
-
Step 900
900
#2F435A
oklch(37.6% 0.047 252.5)
-
Step 950
950
#1C2735
oklch(26.9% 0.03 254.7)
#678AB2 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) | #7B8BB4 | 0.026 |
| Deuteranopia (no green cones) | #7284B1 | 0.020 |
| Tritanopia (no blue cones) | #4B9397 | 0.064 |
| Achromatopsia (no color) | #878787 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678AB2
#678AB2
oklch(62.3% 0.073 252.3)
- #A28055
#A28055
oklch(62.2% 0.072 72.4)
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 #678AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.013
- Dusty Blue #5A86AD ΔE 0.021
- Silver Lake Blue #778DA9 ΔE 0.027
- Off Blue #5684AE ΔE 0.028
- Blue Grey #758DA3 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.040
- Light Slate Gray #778899 ΔE 0.040
- Steel #738595 ΔE 0.043
Use #678AB2 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.