#6166A7
Closest named color: French Blue (#436BAD). oklch(53.5% 0.101 279), rgb(97, 102, 167).
Aa
White text reads best on this color (5.29:1).
About this color
#6166A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.101 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.038 away. White text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #6166A7 |
| RGB | rgb(97, 102, 167) |
| HSL | hsl(236, 28%, 52%) |
| OKLCH | oklch(53.5% 0.101 279) |
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 #6166A7 | 5.29:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #6166A7 | 3.96:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #6166A7 text on white | 5.29:1 | AA | Lc 76.2 | Fine for body text |
| #6166A7 text on black | 3.96:1 | AA large text | Lc -25.5 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#969CCE
oklch(70.6% 0.073 279)
-
Step 500
500
#7D83C1
oklch(63% 0.093 279.1)
-
Step 600
600 (this color)
#6166A7
oklch(53.5% 0.101 279)
-
Step 700
700
#565A95
oklch(49.1% 0.094 279.4)
-
Step 800
800
#464A79
oklch(42.7% 0.078 278.9)
-
Step 900
900
#3B3E61
oklch(37.7% 0.06 279.4)
-
Step 950
950
#222439
oklch(26.9% 0.039 279.2)
#6166A7 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) | #4F6EAA | 0.030 |
| Deuteranopia (no green cones) | #4B69A5 | 0.030 |
| Tritanopia (no blue cones) | #4B737E | 0.090 |
| Achromatopsia (no color) | #6B6B6B | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6166A7
#6166A7
oklch(53.5% 0.101 279)
- #7C6E19
#7C6E19
oklch(53.6% 0.102 99.4)
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 #6166A7, closest first.
No curated palette has a color within ΔE 0.04 of #6166A7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.038
- Dusky Blue #475F94 ΔE 0.051
- Flat Blue #3C73A8 ΔE 0.052
- Muted Blue #3B719F ΔE 0.055
- Dull Blue #49759C ΔE 0.056
- Dark Lavender #856798 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
- Iris #6258C4 ΔE 0.063
Use #6166A7 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.