#4B55BE
Closest named color: Iris (#6258C4). oklch(50% 0.163 274.8), rgb(75, 85, 190).
Aa
White text reads best on this color (6.28:1).
About this color
#4B55BE is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.163 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.037 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.34:1 |
| White text | 6.28:1 |
Values
| HEX | #4B55BE |
| RGB | rgb(75, 85, 190) |
| HSL | hsl(235, 47%, 52%) |
| OKLCH | oklch(50% 0.163 274.8) |
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 #4B55BE | 6.28:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #4B55BE | 3.34:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #4B55BE text on white | 6.28:1 | AA | Lc 80.9 | Fine for body text |
| #4B55BE text on black | 3.34:1 | AA large text | Lc -20.9 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF4
oklch(80.8% 0.079 274.9)
-
Step 400
400
#8A99EF
oklch(70.7% 0.127 275.2)
-
Step 500
500
#6E7EE9
oklch(63.1% 0.16 274.5)
-
Step 600
600
#5864D8
oklch(55.6% 0.176 274.7)
-
Step 700
700 (this color)
#4B55BE
oklch(50% 0.163 274.8)
-
Step 800
800
#3B4497
oklch(42.7% 0.135 274.5)
-
Step 900
900
#323A78
oklch(37.6% 0.105 274.7)
-
Step 950
950
#1D2346
oklch(27.1% 0.065 273.9)
#4B55BE 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) | #0365C2 | 0.059 |
| Deuteranopia (no green cones) | #005BBC | 0.055 |
| Tritanopia (no blue cones) | #006E81 | 0.141 |
| Achromatopsia (no color) | #606060 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B55BE
#4B55BE
oklch(50% 0.163 274.8)
- #766200
#766200
oklch(50.1% 0.103 95)
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 #4B55BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.037
- Warm Blue #4B57DB ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.054
- Bluey Purple #6241C7 ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.060
- Blurple #5539CC ΔE 0.063
Use #4B55BE 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.