#5588AB
Closest named color: Dusty Blue (#5A86AD). oklch(60.5% 0.077 239.7), rgb(85, 136, 171).
Aa
Black text reads best on this color (5.49:1).
About this color
#5588AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.077 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.009 away. Black text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.49:1 |
| White text | 3.82:1 |
Values
| HEX | #5588AB |
| RGB | rgb(85, 136, 171) |
| HSL | hsl(204, 34%, 50%) |
| OKLCH | oklch(60.5% 0.077 239.7) |
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 #5588AB | 3.82:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #5588AB | 5.49:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #5588AB text on white | 3.82:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #5588AB text on black | 5.49:1 | AA | Lc -36.1 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ACC4D7
oklch(80.8% 0.038 241.9)
-
Step 400
400
#7FA6C3
oklch(70.7% 0.06 240.9)
-
Step 500
500 (this color)
#5588AB
oklch(60.5% 0.077 239.7)
-
Step 600
600
#417A9F
oklch(55.7% 0.083 239.1)
-
Step 700
700
#336688
oklch(49% 0.077 240.1)
-
Step 800
800
#2B546F
oklch(42.8% 0.064 239.5)
-
Step 900
900
#274559
oklch(37.6% 0.05 239.2)
-
Step 950
950
#182934
oklch(27.1% 0.031 237.8)
#5588AB 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) | #7988AD | 0.044 |
| Deuteranopia (no green cones) | #6D7EAA | 0.037 |
| Tritanopia (no blue cones) | #299194 | 0.062 |
| Achromatopsia (no color) | #828282 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5588AB
#5588AB
oklch(60.5% 0.077 239.7)
- #A47752
#A47752
oklch(60.6% 0.077 60.1)
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 #5588AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.009
- Off Blue #5684AE ΔE 0.014
- Cool Blue #4984B8 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.030
- Faded Blue #658CBB ΔE 0.033
- Stormy Blue #507B9C ΔE 0.041
- Blue NCS #118AB2 ΔE 0.042
- Blue Grey #758DA3 ΔE 0.044
Use #5588AB 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.