#4B5B8A
Closest named color: Dusky Blue (#475F94). oklch(47.9% 0.079 269), rgb(75, 91, 138).
Aa
White text reads best on this color (6.64:1).
About this color
#4B5B8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.079 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.018 away. White text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.16:1 |
| White text | 6.64:1 |
Values
| HEX | #4B5B8A |
| RGB | rgb(75, 91, 138) |
| HSL | hsl(225, 30%, 42%) |
| OKLCH | oklch(47.9% 0.079 269) |
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 #4B5B8A | 6.64:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #4B5B8A | 3.16:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #4B5B8A text on white | 6.64:1 | AA | Lc 82.8 | Fine for body text |
| #4B5B8A text on black | 3.16:1 | AA large text | Lc -19.2 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DA
oklch(80.8% 0.038 268.8)
-
Step 400
400
#91A0C8
oklch(70.8% 0.061 268.8)
-
Step 500
500
#7688B9
oklch(63.2% 0.077 268.6)
-
Step 600
600
#5F71A5
oklch(55.6% 0.084 269)
-
Step 700
700 (this color)
#4B5B8A
oklch(47.9% 0.079 269)
-
Step 800
800
#404D73
oklch(42.6% 0.066 269.1)
-
Step 900
900
#36405D
oklch(37.6% 0.052 269.2)
-
Step 950
950
#202636
oklch(27% 0.031 268.4)
#4B5B8A 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) | #4A5F8C | 0.011 |
| Deuteranopia (no green cones) | #445A89 | 0.010 |
| Tritanopia (no blue cones) | #34656C | 0.071 |
| Achromatopsia (no color) | #5C5C5C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5B8A
#4B5B8A
oklch(47.9% 0.079 269)
- #6F5B22
#6F5B22
oklch(47.9% 0.079 89.6)
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 #4B5B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.018
- Dusk #4E5481 ΔE 0.022
- Denim Blue #3B5B92 ΔE 0.023
- Denim #3B638C ΔE 0.028
- Twilight #4E518B ΔE 0.029
- Dusty Grape #545775 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.035
Use #4B5B8A 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.