#676FDC
Closest named color: Dark Periwinkle (#665FD1). oklch(59% 0.164 277), rgb(103, 111, 220).
Aa
Black text reads best on this color (4.88:1).
About this color
#676FDC is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.164 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.041 away. Black text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #676FDC |
| RGB | rgb(103, 111, 220) |
| HSL | hsl(236, 63%, 63%) |
| OKLCH | oklch(59% 0.164 277) |
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 #676FDC | 4.29:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #676FDC | 4.88:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #676FDC text on white | 4.29:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #676FDC text on black | 4.88:1 | AA | Lc -32.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B4BDF1
oklch(80.9% 0.074 277)
-
Step 400
400
#8E99E9
oklch(70.7% 0.117 277)
-
Step 500
500
#747EE3
oklch(63.2% 0.151 276.9)
-
Step 600
600 (this color)
#676FDC
oklch(59% 0.164 277)
-
Step 700
700
#4E53B5
oklch(49.2% 0.152 277)
-
Step 800
800
#404492
oklch(42.7% 0.126 277.4)
-
Step 900
900
#353A75
oklch(37.6% 0.1 276.8)
-
Step 950
950
#1F2344
oklch(27.1% 0.061 276.3)
#676FDC 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) | #397FE0 | 0.057 |
| Deuteranopia (no green cones) | #2A75DA | 0.060 |
| Tritanopia (no blue cones) | #31879B | 0.143 |
| Achromatopsia (no color) | #7A7A7A | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #676FDC
#676FDC
oklch(59% 0.164 277)
- #927C00
#927C00
oklch(58.9% 0.121 96.6)
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 #676FDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.041
- Medium Slate Blue #7B68EE ΔE 0.043
- Cornflower #6A79F7 ΔE 0.046
- Royal Blue #4169E1 ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.053
- Soft Blue #6488EA ΔE 0.064
- Iris #6258C4 ΔE 0.065
Use #676FDC 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.