#677AA4
Closest named color: Stormy Blue (#507B9C). oklch(58.1% 0.069 265.5), rgb(103, 122, 164).
Aa
Black text reads best on this color (4.89:1).
About this color
#677AA4 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.069 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.032 away. Black text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #677AA4 |
| RGB | rgb(103, 122, 164) |
| HSL | hsl(221, 25%, 52%) |
| OKLCH | oklch(58.1% 0.069 265.5) |
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 #677AA4 | 4.28:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #677AA4 | 4.89:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #677AA4 text on white | 4.28:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #677AA4 text on black | 4.89:1 | AA | Lc -32.0 | 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 600.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B7C1D5
oklch(80.9% 0.03 264.4)
-
Step 400
400
#92A1C0
oklch(70.8% 0.049 264.8)
-
Step 500
500
#7789B1
oklch(63.1% 0.064 265.8)
-
Step 600
600 (this color)
#677AA4
oklch(58.1% 0.069 265.5)
-
Step 700
700
#4F6086
oklch(49.1% 0.065 265.5)
-
Step 800
800
#414E6C
oklch(42.6% 0.053 266.1)
-
Step 900
900
#374158
oklch(37.6% 0.042 266.2)
-
Step 950
950
#202633
oklch(26.9% 0.026 265.4)
#677AA4 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) | #6C7DA6 | 0.011 |
| Deuteranopia (no green cones) | #6678A3 | 0.006 |
| Tritanopia (no blue cones) | #548388 | 0.063 |
| Achromatopsia (no color) | #7A7A7A | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677AA4
#677AA4
oklch(58.1% 0.069 265.5)
- #8D784A
#8D784A
oklch(58.1% 0.069 85.8)
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 #677AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.032
- Off Blue #5684AE ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.034
- Grey Blue #647D8E ΔE 0.039
- Lavender Gray #7E7F9A ΔE 0.041
- Cerulean #457B9D ΔE 0.042
- Slate Gray #708090 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.042
Use #677AA4 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.