#5165AB
Closest named color: French Blue (#436BAD). oklch(52.4% 0.113 270.1), rgb(81, 101, 171).
Aa
White text reads best on this color (5.52:1).
About this color
#5165AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.113 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.021 away. White text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.79:1 |
| White text | 5.52:1 |
Values
| HEX | #5165AB |
| RGB | rgb(81, 101, 171) |
| HSL | hsl(227, 36%, 49%) |
| OKLCH | oklch(52.4% 0.113 270.1) |
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 #5165AB | 5.52:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #5165AB | 3.79:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #5165AB text on white | 5.52:1 | AA | Lc 77.5 | Fine for body text |
| #5165AB text on black | 3.79:1 | AA large text | Lc -24.3 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E2
oklch(81% 0.05 269.9)
-
Step 400
400
#8D9ED4
oklch(70.6% 0.082 270.7)
-
Step 500
500
#7186C9
oklch(63.2% 0.104 270)
-
Step 600
600 (this color)
#5165AB
oklch(52.4% 0.113 270.1)
-
Step 700
700
#4A5C9C
oklch(49.1% 0.105 270.3)
-
Step 800
800
#3D4B7F
oklch(42.6% 0.088 270.9)
-
Step 900
900
#343F66
oklch(37.7% 0.069 270.9)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#5165AB 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) | #496DAE | 0.022 |
| Deuteranopia (no green cones) | #3F65A9 | 0.022 |
| Tritanopia (no blue cones) | #277480 | 0.100 |
| Achromatopsia (no color) | #696969 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5165AB
#5165AB
oklch(52.4% 0.113 270.1)
- #826600
#826600
oklch(52.3% 0.107 89.8)
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 #5165AB, closest first.
No curated palette has a color within ΔE 0.04 of #5165AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.021
- Mid Blue #276AB3 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.044
- Muted Blue #3B719F ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.056
- Dull Blue #49759C ΔE 0.057
- Windows Blue #3778BF ΔE 0.057
Use #5165AB 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.