#5F6FBF
Closest named color: Windows Blue (#3778BF). oklch(56.6% 0.125 273.3), rgb(95, 111, 191).
Aa
White text reads best on this color (4.65:1).
About this color
#5F6FBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.125 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.045 away. White text reads best on it, at 4.65:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #5F6FBF |
| RGB | rgb(95, 111, 191) |
| HSL | hsl(230, 43%, 56%) |
| OKLCH | oklch(56.6% 0.125 273.3) |
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 #5F6FBF | 4.65:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #5F6FBF | 4.51:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #5F6FBF text on white | 4.65:1 | AA | Lc 72.2 | Content text, not long reading |
| #5F6FBF text on black | 4.51:1 | AA | Lc -29.5 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B4BFE6
oklch(80.9% 0.056 272.7)
-
Step 400
400
#8E9DD9
oklch(70.7% 0.09 273.1)
-
Step 500
500
#7384CF
oklch(63.2% 0.115 273)
-
Step 600
600 (this color)
#5F6FBF
oklch(56.6% 0.125 273.3)
-
Step 700
700
#4C5AA2
oklch(49.2% 0.116 273.1)
-
Step 800
800
#3E4A83
oklch(42.7% 0.095 272.8)
-
Step 900
900
#353E69
oklch(37.7% 0.074 273.4)
-
Step 950
950
#1F243E
oklch(26.9% 0.049 274.4)
#5F6FBF 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) | #4F79C2 | 0.030 |
| Deuteranopia (no green cones) | #4571BD | 0.031 |
| Tritanopia (no blue cones) | #37808E | 0.110 |
| Achromatopsia (no color) | #747474 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F6FBF
#5F6FBF
oklch(56.6% 0.125 273.3)
- #8E7400
#8E7400
oklch(56.7% 0.116 93.2)
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 #5F6FBF, closest first.
No curated palette has a color within ΔE 0.04 of #5F6FBF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.045
- French Blue #436BAD ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.057
- Iris #6258C4 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.063
- Steel Blue #4682B4 ΔE 0.063
Use #5F6FBF 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.