#4C6599
Closest named color: Dusky Blue (#475F94). oklch(51% 0.088 264), rgb(76, 101, 153).
Aa
White text reads best on this color (5.78:1).
About this color
#4C6599 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.088 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.020 away. White text reads best on it, at 5.78:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.62:1 |
| White text | 5.78:1 |
Values
| HEX | #4C6599 |
| RGB | rgb(76, 101, 153) |
| HSL | hsl(221, 34%, 45%) |
| OKLCH | oklch(51% 0.088 264) |
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 #4C6599 | 5.78:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #4C6599 | 3.62:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #4C6599 text on white | 5.78:1 | AA | Lc 78.9 | Fine for body text |
| #4C6599 text on black | 3.62:1 | AA large text | Lc -22.9 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DD
oklch(80.9% 0.043 264.3)
-
Step 400
400
#8BA1CC
oklch(70.8% 0.068 263.6)
-
Step 500
500
#6E89BF
oklch(63.1% 0.088 263.6)
-
Step 600
600
#5772AB
oklch(55.6% 0.095 264.2)
-
Step 700
700 (this color)
#4C6599
oklch(51% 0.088 264)
-
Step 800
800
#3A4E77
oklch(42.7% 0.073 263.8)
-
Step 900
900
#324160
oklch(37.7% 0.057 264.1)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#4C6599 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) | #51699B | 0.014 |
| Deuteranopia (no green cones) | #496298 | 0.010 |
| Tritanopia (no blue cones) | #2B7078 | 0.079 |
| Achromatopsia (no color) | #656565 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C6599
#4C6599
oklch(51% 0.088 264)
- #7E6121
#7E6121
oklch(51% 0.088 83.7)
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 #4C6599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.020
- Denim #3B638C ΔE 0.030
- French Blue #436BAD ΔE 0.033
- Muted Blue #3B719F ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.042
- Dull Blue #49759C ΔE 0.046
- Metallic Blue #4F738E ΔE 0.050
Use #4C6599 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.