#6471B5
Closest named color: French Blue (#436BAD). oklch(56.8% 0.106 274.3), rgb(100, 113, 181).
Aa
White text reads best on this color (4.59:1).
About this color
#6471B5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.106 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.048 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #6471B5 |
| RGB | rgb(100, 113, 181) |
| HSL | hsl(230, 35%, 55%) |
| OKLCH | oklch(56.8% 0.106 274.3) |
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 #6471B5 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #6471B5 | 4.57:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #6471B5 text on white | 4.59:1 | AA | Lc 71.8 | Content text, not long reading |
| #6471B5 text on black | 4.57:1 | AA | Lc -29.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B7BFE0
oklch(80.9% 0.047 274.6)
-
Step 400
400
#929DD1
oklch(70.6% 0.077 275)
-
Step 500
500
#7785C5
oklch(63.2% 0.098 273.9)
-
Step 600
600 (this color)
#6471B5
oklch(56.8% 0.106 274.3)
-
Step 700
700
#505B98
oklch(49% 0.098 274.5)
-
Step 800
800
#424B7C
oklch(42.8% 0.082 274.5)
-
Step 900
900
#373F63
oklch(37.7% 0.063 273.5)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#6471B5 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) | #5879B8 | 0.024 |
| Deuteranopia (no green cones) | #5272B3 | 0.023 |
| Tritanopia (no blue cones) | #487F8A | 0.095 |
| Achromatopsia (no color) | #757575 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6471B5
#6471B5
oklch(56.8% 0.106 274.3)
- #8B751C
#8B751C
oklch(56.7% 0.106 94.3)
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 #6471B5, closest first.
No curated palette has a color within ΔE 0.04 of #6471B5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.048
- Windows Blue #3778BF ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.052
- Steel Blue #4682B4 ΔE 0.055
- Dull Blue #49759C ΔE 0.056
- Cool Blue #4984B8 ΔE 0.057
- Off Blue #5684AE ΔE 0.058
- Stormy Blue #507B9C ΔE 0.060
Use #6471B5 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.