#536BDD
Closest named color: Royal Blue (#4169E1). oklch(57% 0.175 270.9), rgb(83, 107, 221).
Aa
White text reads best on this color (4.65:1).
About this color
#536BDD is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.175 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.022 away. White text reads best on it, at 4.65:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #536BDD |
| RGB | rgb(83, 107, 221) |
| HSL | hsl(230, 67%, 60%) |
| OKLCH | oklch(57% 0.175 270.9) |
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 #536BDD | 4.65:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #536BDD | 4.51:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #536BDD text on white | 4.65:1 | AA | Lc 72.0 | Content text, not long reading |
| #536BDD text on black | 4.51:1 | AA | Lc -29.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBEF4
oklch(80.8% 0.079 271)
-
Step 400
400
#839BEF
oklch(70.6% 0.126 270.8)
-
Step 500
500
#6680EA
oklch(63.1% 0.161 270.8)
-
Step 600
600 (this color)
#536BDD
oklch(57% 0.175 270.9)
-
Step 700
700
#4155BB
oklch(49.2% 0.162 270.9)
-
Step 800
800
#354698
oklch(42.8% 0.135 270.8)
-
Step 900
900
#2E3C79
oklch(37.9% 0.105 270.9)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#536BDD 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) | #267BE1 | 0.049 |
| Deuteranopia (no green cones) | #006EDB | 0.053 |
| Tritanopia (no blue cones) | #00869A | 0.149 |
| Achromatopsia (no color) | #747474 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536BDD
#536BDD
oklch(57% 0.175 270.9)
- #917400
#917400
oklch(57.1% 0.117 91.3)
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 #536BDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.022
- Dark Periwinkle #665FD1 ΔE 0.038
- Neon Blue #4361EE ΔE 0.042
- Warm Blue #4B57DB ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.055
- Iris #6258C4 ΔE 0.058
Use #536BDD 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.