#676BBC
Closest named color: Dark Periwinkle (#665FD1). oklch(56.2% 0.124 279.5), rgb(103, 107, 188).
Aa
White text reads best on this color (4.76:1).
About this color
#676BBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.124 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.048 away. White text reads best on it, at 4.76:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #676BBC |
| RGB | rgb(103, 107, 188) |
| HSL | hsl(237, 39%, 57%) |
| OKLCH | oklch(56.2% 0.124 279.5) |
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 #676BBC | 4.76:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #676BBC | 4.40:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #676BBC text on white | 4.76:1 | AA | Lc 73.0 | Content text, not long reading |
| #676BBC text on black | 4.40:1 | AA large text | Lc -28.7 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D7EE
oklch(88.4% 0.032 279.8)
-
Step 300
300
#B9BDE5
oklch(80.9% 0.056 280.6)
-
Step 400
400
#959BD8
oklch(70.8% 0.089 279.5)
-
Step 500
500
#7C81CD
oklch(63.1% 0.114 279.7)
-
Step 600
600 (this color)
#676BBC
oklch(56.2% 0.124 279.5)
-
Step 700
700
#5457A0
oklch(49% 0.115 279.5)
-
Step 800
800
#454882
oklch(42.8% 0.095 279.3)
-
Step 900
900
#3A3C68
oklch(37.6% 0.075 280.2)
-
Step 950
950
#22243D
oklch(27.1% 0.046 279.3)
#676BBC 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) | #4C76BF | 0.041 |
| Deuteranopia (no green cones) | #4670BA | 0.042 |
| Tritanopia (no blue cones) | #4A7C8A | 0.109 |
| Achromatopsia (no color) | #737373 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #676BBC
#676BBC
oklch(56.2% 0.124 279.5)
- #867500
#867500
oklch(56.1% 0.116 99.1)
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 #676BBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.048
- French Blue #436BAD ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.053
- Iris #6258C4 ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.055
- Windows Blue #3778BF ΔE 0.059
- Deep Lavender #8D5EB7 ΔE 0.065
- Flat Blue #3C73A8 ΔE 0.065
Use #676BBC 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.