#0673D3
Closest named color: Windows Blue (#3778BF). oklch(55.6% 0.17 253.2), rgb(6, 115, 211).
Aa
White text reads best on this color (4.77:1).
About this color
#0673D3 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.170 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.042 away. White text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.40:1 |
| White text | 4.77:1 |
Values
| HEX | #0673D3 |
| RGB | rgb(6, 115, 211) |
| HSL | hsl(208, 94%, 43%) |
| OKLCH | oklch(55.6% 0.17 253.2) |
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 #0673D3 | 4.77:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #0673D3 | 4.40:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #0673D3 text on white | 4.77:1 | AA | Lc 72.4 | Content text, not long reading |
| #0673D3 text on black | 4.40:1 | AA large text | Lc -29.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF5
oklch(88.4% 0.042 253.8)
-
Step 300
300
#9EC4F2
oklch(80.9% 0.077 253.5)
-
Step 400
400
#67A4EB
oklch(70.7% 0.123 253.2)
-
Step 500
500
#398BE5
oklch(63.1% 0.157 253.3)
-
Step 600
600 (this color)
#0673D3
oklch(55.6% 0.17 253.2)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#024F94
oklch(42.8% 0.131 253.1)
-
Step 900
900
#104276
oklch(37.7% 0.103 253.2)
-
Step 950
950
#0C2745
oklch(27% 0.065 253.3)
#0673D3 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) | #3D7BD7 | 0.039 |
| Deuteranopia (no green cones) | #006BD1 | 0.022 |
| Tritanopia (no blue cones) | #008A99 | 0.124 |
| Achromatopsia (no color) | #737373 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0673D3
#0673D3
oklch(55.6% 0.17 253.2)
- #9C6700
#9C6700
oklch(55.7% 0.118 73.9)
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 #0673D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.044
- Royal Blue #4169E1 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.052
- Water Blue #0E87CC ΔE 0.059
- Nice Blue #107AB0 ΔE 0.062
- French Blue #436BAD ΔE 0.064
- Clear Blue #247AFD ΔE 0.067
Use #0673D3 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.