#536799
Closest named color: Dusky Blue (#475F94). oklch(51.9% 0.083 266.9), rgb(83, 103, 153).
Aa
White text reads best on this color (5.57:1).
About this color
#536799 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.083 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.030 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #536799 |
| RGB | rgb(83, 103, 153) |
| HSL | hsl(223, 30%, 46%) |
| OKLCH | oklch(51.9% 0.083 266.9) |
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 #536799 | 5.57:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #536799 | 3.76:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #536799 text on white | 5.57:1 | AA | Lc 77.8 | Fine for body text |
| #536799 text on black | 3.76:1 | AA large text | Lc -24.0 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B5C0DB
oklch(80.8% 0.04 267.9)
-
Step 400
400
#8EA0CA
oklch(70.7% 0.065 266.7)
-
Step 500
500
#7388BC
oklch(63.1% 0.082 267.1)
-
Step 600
600
#5C71A8
oklch(55.5% 0.09 267.5)
-
Step 700
700 (this color)
#536799
oklch(51.9% 0.083 266.9)
-
Step 800
800
#3E4E75
oklch(42.8% 0.068 266.5)
-
Step 900
900
#35415E
oklch(37.8% 0.052 266.7)
-
Step 950
950
#1F2637
oklch(27% 0.033 266.9)
#536799 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) | #556B9B | 0.012 |
| Deuteranopia (no green cones) | #4E6598 | 0.009 |
| Tritanopia (no blue cones) | #397179 | 0.074 |
| Achromatopsia (no color) | #686868 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536799
#536799
oklch(51.9% 0.083 266.9)
- #7D652A
#7D652A
oklch(51.8% 0.083 86.9)
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 #536799, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.030
- French Blue #436BAD ΔE 0.035
- Muted Blue #3B719F ΔE 0.035
- Denim #3B638C ΔE 0.039
- Dull Blue #49759C ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.041
- Metallic Blue #4F738E ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.049
Use #536799 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.