#6B7399
Closest named color: Stormy Blue (#507B9C). oklch(56.4% 0.06 275.1), rgb(107, 115, 153).
Aa
White text reads best on this color (4.62:1).
About this color
#6B7399 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.060 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.038 away. White text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.53:1 |
| White text | 4.62:1 |
Values
| HEX | #6B7399 |
| RGB | rgb(107, 115, 153) |
| HSL | hsl(230, 18%, 51%) |
| OKLCH | oklch(56.4% 0.06 275.1) |
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 #6B7399 | 4.62:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #6B7399 | 4.53:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #6B7399 text on white | 4.62:1 | AA | Lc 72.1 | Content text, not long reading |
| #6B7399 text on black | 4.53:1 | AA | Lc -29.5 | Dividers and decoration only |
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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D9E3
oklch(88.6% 0.014 272.7)
-
Step 300
300
#BBC0D2
oklch(80.9% 0.026 273.4)
-
Step 400
400
#989FBC
oklch(70.7% 0.043 274.6)
-
Step 500
500
#7F87AB
oklch(63% 0.055 274.9)
-
Step 600
600 (this color)
#6B7399
oklch(56.4% 0.06 275.1)
-
Step 700
700
#575E81
oklch(49% 0.057 275.4)
-
Step 800
800
#474D68
oklch(42.6% 0.046 274.6)
-
Step 900
900
#3C4055
oklch(37.7% 0.036 276.1)
-
Step 950
950
#232632
oklch(27.1% 0.023 273.8)
#6B7399 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) | #68779B | 0.011 |
| Deuteranopia (no green cones) | #657398 | 0.009 |
| Tritanopia (no blue cones) | #5F7A80 | 0.053 |
| Achromatopsia (no color) | #757575 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B7399
#6B7399
oklch(56.4% 0.06 275.1)
- #80754C
#80754C
oklch(56.2% 0.06 94.9)
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 #6B7399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.038
- Grey Purple #826D8C ΔE 0.039
- Grey Blue #647D8E ΔE 0.039
- Dull Blue #49759C ΔE 0.042
- Metallic Blue #4F738E ΔE 0.042
- Slate Gray #708090 ΔE 0.045
- Lavender Gray #7E7F9A ΔE 0.046
- Battleship Gray #6C757D ΔE 0.047
Use #6B7399 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.