#4B6BCD
Closest named color: Royal Blue (#4169E1). oklch(55.5% 0.156 267.5), rgb(75, 107, 205).
Aa
White text reads best on this color (4.90:1).
About this color
#4B6BCD is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.156 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.033 away. White text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #4B6BCD |
| RGB | rgb(75, 107, 205) |
| HSL | hsl(225, 57%, 55%) |
| OKLCH | oklch(55.5% 0.156 267.5) |
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 #4B6BCD | 4.90:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #4B6BCD | 4.28:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #4B6BCD text on white | 4.90:1 | AA | Lc 73.7 | Content text, not long reading |
| #4B6BCD text on black | 4.28:1 | AA large text | Lc -28.0 | 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 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0EF
oklch(81% 0.07 267.6)
-
Step 400
400
#829EE7
oklch(70.8% 0.112 267.5)
-
Step 500
500
#6384E0
oklch(63.1% 0.144 267.4)
-
Step 600
600 (this color)
#4B6BCD
oklch(55.5% 0.156 267.5)
-
Step 700
700
#3D59B2
oklch(49.1% 0.145 267.7)
-
Step 800
800
#324990
oklch(42.6% 0.12 267.6)
-
Step 900
900
#2C3E73
oklch(37.7% 0.093 267.7)
-
Step 950
950
#1A2543
oklch(27.1% 0.058 267.3)
#4B6BCD 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) | #3977D1 | 0.033 |
| Deuteranopia (no green cones) | #1E6BCB | 0.037 |
| Tritanopia (no blue cones) | #008292 | 0.132 |
| Achromatopsia (no color) | #717171 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6BCD
#4B6BCD
oklch(55.5% 0.156 267.5)
- #8F6E00
#8F6E00
oklch(55.5% 0.114 87.7)
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 #4B6BCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.044
- Windows Blue #3778BF ΔE 0.046
- French Blue #436BAD ΔE 0.052
- Iris #6258C4 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.055
- Warm Blue #4B57DB ΔE 0.055
Use #4B6BCD 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.