#5355CC
Closest named color: Warm Blue (#4B57DB). oklch(51.6% 0.18 277.3), rgb(83, 85, 204).
Aa
White text reads best on this color (5.93:1).
About this color
#5355CC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.180 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.025 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #5355CC |
| RGB | rgb(83, 85, 204) |
| HSL | hsl(239, 54%, 56%) |
| OKLCH | oklch(51.6% 0.18 277.3) |
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 #5355CC | 5.93:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #5355CC | 3.53:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #5355CC text on white | 5.93:1 | AA | Lc 79.3 | Fine for body text |
| #5355CC text on black | 3.53:1 | AA large text | Lc -22.5 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B2BCF9
oklch(80.9% 0.087 277.1)
-
Step 400
400
#8C97F6
oklch(70.8% 0.139 277.2)
-
Step 500
500
#7279F2
oklch(63% 0.178 277.5)
-
Step 600
600
#5C5FE1
oklch(55.6% 0.193 277.1)
-
Step 700
700 (this color)
#5355CC
oklch(51.6% 0.18 277.3)
-
Step 800
800
#3E409E
oklch(42.7% 0.149 277.1)
-
Step 900
900
#34387D
oklch(37.7% 0.115 276.9)
-
Step 950
950
#1E2149
oklch(26.9% 0.073 277.1)
#5355CC 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) | #0069D0 | 0.069 |
| Deuteranopia (no green cones) | #005FCA | 0.064 |
| Tritanopia (no blue cones) | #007288 | 0.156 |
| Achromatopsia (no color) | #646464 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5355CC
#5355CC
oklch(51.6% 0.18 277.3)
- #796700
#796700
oklch(51.6% 0.106 97.1)
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 #5355CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.025
- Iris #6258C4 ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.043
- Bluey Purple #6241C7 ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.056
Use #5355CC 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.