#59639B
Closest named color: Dusky Blue (#475F94). oklch(51.6% 0.089 275.1), rgb(89, 99, 155).
Aa
White text reads best on this color (5.70:1).
About this color
#59639B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.089 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.030 away. White text reads best on it, at 5.70:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #59639B |
| RGB | rgb(89, 99, 155) |
| HSL | hsl(231, 27%, 48%) |
| OKLCH | oklch(51.6% 0.089 275.1) |
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 #59639B | 5.70:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #59639B | 3.68:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #59639B text on white | 5.70:1 | AA | Lc 78.5 | Fine for body text |
| #59639B text on black | 3.68:1 | AA large text | Lc -23.3 | 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
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#949ECC
oklch(70.8% 0.068 275)
-
Step 500
500
#7A85BF
oklch(63.1% 0.088 275.3)
-
Step 600
600
#636EAB
oklch(55.6% 0.096 275.1)
-
Step 700
700 (this color)
#59639B
oklch(51.6% 0.089 275.1)
-
Step 800
800
#434B77
oklch(42.6% 0.074 275)
-
Step 900
900
#393F60
oklch(37.7% 0.057 275.4)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#59639B 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) | #50699D | 0.019 |
| Deuteranopia (no green cones) | #4A649A | 0.020 |
| Tritanopia (no blue cones) | #446E78 | 0.078 |
| Achromatopsia (no color) | #666666 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59639B
#59639B
oklch(51.6% 0.089 275.1)
- #786722
#786722
oklch(51.6% 0.09 95.1)
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 #59639B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.030
- French Blue #436BAD ΔE 0.039
- Denim #3B638C ΔE 0.046
- Muted Blue #3B719F ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.051
- Dull Blue #49759C ΔE 0.053
- Metallic Blue #4F738E ΔE 0.057
Use #59639B 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.