#4B5BAF
Closest named color: French Blue (#436BAD). oklch(50.1% 0.134 272.6), rgb(75, 91, 175).
Aa
White text reads best on this color (6.14:1).
About this color
#4B5BAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.134 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.044 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #4B5BAF |
| RGB | rgb(75, 91, 175) |
| HSL | hsl(230, 40%, 49%) |
| OKLCH | oklch(50.1% 0.134 272.6) |
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 #4B5BAF | 6.14:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #4B5BAF | 3.41:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #4B5BAF text on white | 6.14:1 | AA | Lc 80.5 | Fine for body text |
| #4B5BAF text on black | 3.41:1 | AA large text | Lc -21.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B2BFEB
oklch(81% 0.064 272)
-
Step 400
400
#8B9CE2
oklch(70.7% 0.105 273)
-
Step 500
500
#6F82D9
oklch(63.1% 0.133 272.8)
-
Step 600
600
#586AC7
oklch(55.6% 0.145 272.6)
-
Step 700
700 (this color)
#4B5BAF
oklch(50.1% 0.134 272.6)
-
Step 800
800
#3B488B
oklch(42.6% 0.111 272.6)
-
Step 900
900
#323D6F
oklch(37.7% 0.087 272.3)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#4B5BAF 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) | #3366B2 | 0.036 |
| Deuteranopia (no green cones) | #255DAD | 0.039 |
| Tritanopia (no blue cones) | #0C6E7C | 0.120 |
| Achromatopsia (no color) | #616161 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5BAF
#4B5BAF
oklch(50.1% 0.134 272.6)
- #786100
#786100
oklch(50.1% 0.103 92.6)
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 #4B5BAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.044
- Dusky Blue #475F94 ΔE 0.047
- Iris #6258C4 ΔE 0.048
- Mid Blue #276AB3 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.052
- Twilight #4E518B ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.066
- Dark Periwinkle #665FD1 ΔE 0.067
Use #4B5BAF 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.