#5D6399
Closest named color: Dusky Blue (#475F94). oklch(51.8% 0.085 278.1), rgb(93, 99, 153).
Aa
White text reads best on this color (5.66:1).
About this color
#5D6399 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.085 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.034 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.71:1 |
| White text | 5.66:1 |
Values
| HEX | #5D6399 |
| RGB | rgb(93, 99, 153) |
| HSL | hsl(234, 24%, 48%) |
| OKLCH | oklch(51.8% 0.085 278.1) |
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 #5D6399 | 5.66:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #5D6399 | 3.71:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #5D6399 text on white | 5.66:1 | AA | Lc 78.3 | Fine for body text |
| #5D6399 text on black | 3.71:1 | AA large text | Lc -23.5 | 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
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABFDC
oklch(81% 0.041 277.7)
-
Step 400
400
#979DCA
oklch(70.7% 0.066 278.6)
-
Step 500
500
#7D84BC
oklch(63% 0.085 278.2)
-
Step 600
600
#676DA9
oklch(55.5% 0.093 278.5)
-
Step 700
700 (this color)
#5D6399
oklch(51.8% 0.085 278.1)
-
Step 800
800
#464B75
oklch(42.7% 0.07 277.8)
-
Step 900
900
#3B3F5F
oklch(37.9% 0.055 278)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#5D6399 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 | 0.021 |
| Deuteranopia (no green cones) | #4D6598 | 0.022 |
| Tritanopia (no blue cones) | #4B6E77 | 0.076 |
| Achromatopsia (no color) | #676767 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D6399
#5D6399
oklch(51.8% 0.085 278.1)
- #756928
#756928
oklch(51.8% 0.086 98.8)
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 #5D6399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.034
- French Blue #436BAD ΔE 0.044
- Denim #3B638C ΔE 0.050
- Muted Blue #3B719F ΔE 0.051
- Dull Blue #49759C ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.054
- Flat Blue #3C73A8 ΔE 0.055
- Metallic Blue #4F738E ΔE 0.056
Use #5D6399 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.