#4B6CB7
Closest named color: French Blue (#436BAD). oklch(54.3% 0.124 264.7), rgb(75, 108, 183).
Aa
White text reads best on this color (5.08:1).
About this color
#4B6CB7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.124 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.019 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #4B6CB7 |
| RGB | rgb(75, 108, 183) |
| HSL | hsl(222, 43%, 51%) |
| OKLCH | oklch(54.3% 0.124 264.7) |
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 #4B6CB7 | 5.08:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #4B6CB7 | 4.12:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #4B6CB7 text on white | 5.08:1 | AA | Lc 74.9 | Content text, not long reading |
| #4B6CB7 text on black | 4.12:1 | AA large text | Lc -26.8 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E6
oklch(81% 0.056 264.7)
-
Step 400
400
#85A0D9
oklch(70.7% 0.089 264.7)
-
Step 500
500
#6787CE
oklch(63% 0.114 264.9)
-
Step 600
600 (this color)
#4B6CB7
oklch(54.3% 0.124 264.7)
-
Step 700
700
#405DA2
oklch(49% 0.116 265.2)
-
Step 800
800
#354D83
oklch(42.8% 0.095 264.6)
-
Step 900
900
#2E4069
oklch(37.7% 0.074 265.1)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#4B6CB7 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) | #4C73BA | 0.019 |
| Deuteranopia (no green cones) | #3D6AB5 | 0.017 |
| Tritanopia (no blue cones) | #007D88 | 0.110 |
| Achromatopsia (no color) | #6E6E6E | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6CB7
#4B6CB7
oklch(54.3% 0.124 264.7)
- #8D6900
#8D6900
oklch(54.3% 0.111 84.8)
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 #4B6CB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.019
- Windows Blue #3778BF ΔE 0.035
- Mid Blue #276AB3 ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.037
- Muted Blue #3B719F ΔE 0.047
- Nice Blue #107AB0 ΔE 0.055
- Dull Blue #49759C ΔE 0.055
- Dusky Blue #475F94 ΔE 0.062
Use #4B6CB7 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.