#5C75BA
Closest named color: Windows Blue (#3778BF). oklch(57.4% 0.111 267.8), rgb(92, 117, 186).
Aa
Black text reads best on this color (4.70:1).
About this color
#5C75BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.111 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.037 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.70:1 |
| White text | 4.45:1 |
Values
| HEX | #5C75BA |
| RGB | rgb(92, 117, 186) |
| HSL | hsl(224, 41%, 55%) |
| OKLCH | oklch(57.4% 0.111 267.8) |
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 #5C75BA | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #5C75BA | 4.70:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #5C75BA text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #5C75BA text on black | 4.70:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B3C0E2
oklch(80.9% 0.05 268.8)
-
Step 400
400
#8B9FD3
oklch(70.6% 0.08 268.1)
-
Step 500
500
#6F87C8
oklch(63.2% 0.102 268)
-
Step 600
600 (this color)
#5C75BA
oklch(57.4% 0.111 267.8)
-
Step 700
700
#475D9B
oklch(49% 0.103 267.8)
-
Step 800
800
#3B4C7E
oklch(42.7% 0.086 268.4)
-
Step 900
900
#324065
oklch(37.7% 0.066 267.4)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#5C75BA 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) | #5A7CBD | 0.019 |
| Deuteranopia (no green cones) | #5073B8 | 0.016 |
| Tritanopia (no blue cones) | #33848F | 0.099 |
| Achromatopsia (no color) | #777777 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C75BA
#5C75BA
oklch(57.4% 0.111 267.8)
- #947415
#947415
oklch(57.5% 0.111 88)
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 #5C75BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.037
- Steel Blue #4682B4 ΔE 0.044
- Cool Blue #4984B8 ΔE 0.045
- French Blue #436BAD ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.047
- Off Blue #5684AE ΔE 0.051
- Dull Blue #49759C ΔE 0.054
- Stormy Blue #507B9C ΔE 0.057
Use #5C75BA 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.