#5C70BC
Closest named color: Windows Blue (#3778BF). oklch(56.4% 0.12 271), rgb(92, 112, 188).
Aa
White text reads best on this color (4.66:1).
About this color
#5C70BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.120 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.040 away. White text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.49:1 |
| White text | 4.66:1 |
Values
| HEX | #5C70BC |
| RGB | rgb(92, 112, 188) |
| HSL | hsl(228, 42%, 55%) |
| OKLCH | oklch(56.4% 0.12 271) |
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 #5C70BC | 4.66:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #5C70BC | 4.49:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #5C70BC text on white | 4.66:1 | AA | Lc 72.3 | Content text, not long reading |
| #5C70BC text on black | 4.49:1 | AA large text | Lc -29.4 | 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
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D2D9EE
oklch(88.6% 0.03 271.1)
-
Step 300
300
#B3BFE4
oklch(80.8% 0.054 271)
-
Step 400
400
#8C9ED7
oklch(70.7% 0.086 270.6)
-
Step 500
500
#7185CC
oklch(63.1% 0.11 271)
-
Step 600
600 (this color)
#5C70BC
oklch(56.4% 0.12 271)
-
Step 700
700
#4A5BA0
oklch(49.1% 0.112 271.3)
-
Step 800
800
#3C4B81
oklch(42.7% 0.092 270.4)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#5C70BC 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) | #5279BF | 0.025 |
| Deuteranopia (no green cones) | #4870BA | 0.024 |
| Tritanopia (no blue cones) | #32808D | 0.107 |
| Achromatopsia (no color) | #747474 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C70BC
#5C70BC
oklch(56.4% 0.12 271)
- #8F7200
#8F7200
oklch(56.4% 0.115 91)
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 #5C70BC, closest first.
No curated palette has a color within ΔE 0.04 of #5C70BC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- French Blue #436BAD ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.050
- Steel Blue #4682B4 ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.059
- Cool Blue #4984B8 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Dull Blue #49759C ΔE 0.061
Use #5C70BC 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.