#5B5EA3
Closest named color: Dusky Blue (#475F94). oklch(51.2% 0.108 280), rgb(91, 94, 163).
Aa
White text reads best on this color (5.87:1).
About this color
#5B5EA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.108 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.038 away. White text reads best on it, at 5.87:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #5B5EA3 |
| RGB | rgb(91, 94, 163) |
| HSL | hsl(238, 28%, 50%) |
| OKLCH | oklch(51.2% 0.108 280) |
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 #5B5EA3 | 5.87:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #5B5EA3 | 3.57:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #5B5EA3 text on white | 5.87:1 | AA | Lc 79.3 | Fine for body text |
| #5B5EA3 text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#B9BEE3
oklch(81% 0.052 279.1)
-
Step 400
400
#969BD4
oklch(70.7% 0.083 280.1)
-
Step 500
500
#7D82C9
oklch(63.2% 0.106 279.8)
-
Step 600
600
#676AB6
oklch(55.6% 0.117 280.2)
-
Step 700
700 (this color)
#5B5EA3
oklch(51.2% 0.108 280)
-
Step 800
800
#46487F
oklch(42.7% 0.09 280.3)
-
Step 900
900
#3A3D66
oklch(37.7% 0.07 279.3)
-
Step 950
950
#22243C
oklch(27.1% 0.045 279.3)
#5B5EA3 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) | #4567A6 | 0.035 |
| Deuteranopia (no green cones) | #4062A1 | 0.036 |
| Tritanopia (no blue cones) | #446C78 | 0.095 |
| Achromatopsia (no color) | #646464 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5EA3
#5B5EA3
oklch(51.2% 0.108 280)
- #756700
#756700
oklch(51.1% 0.106 100)
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 #5B5EA3, closest first.
No curated palette has a color within ΔE 0.04 of #5B5EA3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.038
- French Blue #436BAD ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Iris #6258C4 ΔE 0.057
- Denim #3B638C ΔE 0.060
- Mid Blue #276AB3 ΔE 0.061
- Dusk #4E5481 ΔE 0.062
Use #5B5EA3 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.