#535CBB
Closest named color: Iris (#6258C4). oklch(51.7% 0.148 275.9), rgb(83, 92, 187).
Aa
White text reads best on this color (5.80:1).
About this color
#535CBB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.148 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.027 away. White text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #535CBB |
| RGB | rgb(83, 92, 187) |
| HSL | hsl(235, 43%, 53%) |
| OKLCH | oklch(51.7% 0.148 275.9) |
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 #535CBB | 5.80:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #535CBB | 3.61:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #535CBB text on white | 5.80:1 | AA | Lc 78.8 | Fine for body text |
| #535CBB text on black | 3.61:1 | AA large text | Lc -23.0 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D1D8F4
oklch(88.6% 0.039 274.4)
-
Step 300
300
#B3BDEF
oklch(80.8% 0.072 275.9)
-
Step 400
400
#8D9AE7
oklch(70.7% 0.114 275.8)
-
Step 500
500
#727FE0
oklch(63.1% 0.146 275.7)
-
Step 600
600
#5C66CE
oklch(55.6% 0.159 275.8)
-
Step 700
700 (this color)
#535CBB
oklch(51.7% 0.148 275.9)
-
Step 800
800
#3E4590
oklch(42.6% 0.122 275.9)
-
Step 900
900
#353B73
oklch(37.7% 0.095 276.2)
-
Step 950
950
#1F2343
oklch(27% 0.059 276.3)
#535CBB 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) | #2B6ABE | 0.050 |
| Deuteranopia (no green cones) | #1A61B9 | 0.054 |
| Tritanopia (no blue cones) | #1C7183 | 0.129 |
| Achromatopsia (no color) | #656565 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #535CBB
#535CBB
oklch(51.7% 0.148 275.9)
- #7B6700
#7B6700
oklch(51.8% 0.106 95.6)
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 #535CBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.050
- French Blue #436BAD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.053
- Mid Blue #276AB3 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.065
Use #535CBB 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.