#677EB8
Closest named color: Off Blue (#5684AE). oklch(59.9% 0.093 267.1), rgb(103, 126, 184).
Aa
Black text reads best on this color (5.25:1).
About this color
#677EB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.093 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.032 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #677EB8 |
| RGB | rgb(103, 126, 184) |
| HSL | hsl(223, 36%, 56%) |
| OKLCH | oklch(59.9% 0.093 267.1) |
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 #677EB8 | 3.99:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #677EB8 | 5.25:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #677EB8 text on white | 3.99:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #677EB8 text on black | 5.25:1 | AA | Lc -34.4 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B3C0DF
oklch(80.8% 0.046 267.4)
-
Step 400
400
#8CA0CF
oklch(70.8% 0.073 266.6)
-
Step 500
500 (this color)
#677EB8
oklch(59.9% 0.093 267.1)
-
Step 600
600
#5971AF
oklch(55.7% 0.101 267.1)
-
Step 700
700
#495E96
oklch(49.1% 0.094 267.3)
-
Step 800
800
#3C4D7A
oklch(42.7% 0.078 267.4)
-
Step 900
900
#334062
oklch(37.6% 0.061 267.5)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#677EB8 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) | #6983BA | 0.014 |
| Deuteranopia (no green cones) | #617CB7 | 0.010 |
| Tritanopia (no blue cones) | #4A8A93 | 0.083 |
| Achromatopsia (no color) | #7F7F7F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677EB8
#677EB8
oklch(59.9% 0.093 267.1)
- #987C38
#987C38
oklch(59.9% 0.093 86.9)
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 #677EB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.035
- Cool Blue #4984B8 ΔE 0.035
- Steel Blue #4682B4 ΔE 0.038
- Faded Blue #658CBB ΔE 0.038
- Stormy Blue #507B9C ΔE 0.054
- Lavender Gray #7E7F9A ΔE 0.055
- Windows Blue #3778BF ΔE 0.057
Use #677EB8 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.