#5583B2
Closest named color: Off Blue (#5684AE). oklch(59.7% 0.088 250), rgb(85, 131, 178).
Aa
Black text reads best on this color (5.27:1).
About this color
#5583B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.088 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.008 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #5583B2 |
| RGB | rgb(85, 131, 178) |
| HSL | hsl(210, 38%, 52%) |
| OKLCH | oklch(59.7% 0.088 250) |
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 #5583B2 | 3.98:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #5583B2 | 5.27:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #5583B2 text on white | 3.98:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #5583B2 text on black | 5.27:1 | AA | Lc -34.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DC
oklch(80.8% 0.043 250.6)
-
Step 400
400
#80A4CB
oklch(70.6% 0.07 250.8)
-
Step 500
500 (this color)
#5583B2
oklch(59.7% 0.088 250)
-
Step 600
600
#4577A9
oklch(55.6% 0.095 249.9)
-
Step 700
700
#366491
oklch(49.1% 0.089 249.6)
-
Step 800
800
#2D5276
oklch(42.8% 0.074 249.3)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#5583B2 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) | #7085B4 | 0.034 |
| Deuteranopia (no green cones) | #647BB1 | 0.026 |
| Tritanopia (no blue cones) | #238E93 | 0.077 |
| Achromatopsia (no color) | #7F7F7F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5583B2
#5583B2
oklch(59.7% 0.088 250)
- #A17641
#A17641
oklch(59.8% 0.088 70.5)
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 #5583B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.008
- Cool Blue #4984B8 ΔE 0.014
- Dusty Blue #5A86AD ΔE 0.014
- Steel Blue #4682B4 ΔE 0.016
- Faded Blue #658CBB ΔE 0.034
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.042
- Blue NCS #118AB2 ΔE 0.045
Use #5583B2 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.