#677699
Closest named color: Stormy Blue (#507B9C). oklch(56.7% 0.057 266.6), rgb(103, 118, 153).
Aa
Black text reads best on this color (4.62:1).
About this color
#677699 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.057 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.029 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.62:1 |
| White text | 4.53:1 |
Values
| HEX | #677699 |
| RGB | rgb(103, 118, 153) |
| HSL | hsl(222, 20%, 50%) |
| OKLCH | oklch(56.7% 0.057 266.6) |
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 #677699 | 4.53:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #677699 | 4.62:1 | AA | Lc 32.6 | Non-text elements, placeholder text |
| #677699 text on white | 4.53:1 | AA | Lc 71.5 | Content text, not long reading |
| #677699 text on black | 4.62:1 | AA | Lc -30.2 | 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#B9C1D2
oklch(81% 0.026 265.6)
-
Step 400
400
#95A0BB
oklch(70.6% 0.041 267.8)
-
Step 500
500
#7B89AA
oklch(63.1% 0.052 266.9)
-
Step 600
600 (this color)
#677699
oklch(56.7% 0.057 266.6)
-
Step 700
700
#536080
oklch(49.1% 0.054 267.3)
-
Step 800
800
#444F68
oklch(42.8% 0.044 266.1)
-
Step 900
900
#394154
oklch(37.6% 0.034 266.9)
-
Step 950
950
#212631
oklch(26.9% 0.022 265.8)
#677699 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) | #6B799B | 0.011 |
| Deuteranopia (no green cones) | #667498 | 0.006 |
| Tritanopia (no blue cones) | #597D82 | 0.051 |
| Achromatopsia (no color) | #767676 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677699
#677699
oklch(56.7% 0.057 266.6)
- #85754F
#85754F
oklch(56.8% 0.057 87.7)
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 #677699, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.029
- Grey Blue #647D8E ΔE 0.031
- Dull Blue #49759C ΔE 0.037
- Metallic Blue #4F738E ΔE 0.038
- Slate Gray #708090 ΔE 0.039
- Cerulean #457B9D ΔE 0.040
- Battleship Grey #6B7C85 ΔE 0.041
- Battleship Gray #6C757D ΔE 0.043
Use #677699 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.