#5D81BC
Closest named color: Cool Blue (#4984B8). oklch(60.2% 0.099 259.9), rgb(93, 129, 188).
Aa
Black text reads best on this color (5.33:1).
About this color
#5D81BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.099 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.023 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #5D81BC |
| RGB | rgb(93, 129, 188) |
| HSL | hsl(217, 41%, 55%) |
| OKLCH | oklch(60.2% 0.099 259.9) |
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 #5D81BC | 3.93:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #5D81BC | 5.33:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #5D81BC text on white | 3.93:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #5D81BC text on black | 5.33:1 | AA | Lc -35.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEB
oklch(88.5% 0.026 259)
-
Step 300
300
#AFC2E1
oklch(81% 0.049 260.2)
-
Step 400
400
#84A2D2
oklch(70.8% 0.078 259.7)
-
Step 500
500 (this color)
#5D81BC
oklch(60.2% 0.099 259.9)
-
Step 600
600
#4D73B2
oklch(55.6% 0.108 260.1)
-
Step 700
700
#3E6099
oklch(49.1% 0.1 260.2)
-
Step 800
800
#334F7C
oklch(42.7% 0.083 259.5)
-
Step 900
900
#2D4264
oklch(37.8% 0.064 259.7)
-
Step 950
950
#1A273B
oklch(27.1% 0.042 258.8)
#5D81BC 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) | #6A85BF | 0.021 |
| Deuteranopia (no green cones) | #5F7CBB | 0.014 |
| Tritanopia (no blue cones) | #318E96 | 0.089 |
| Achromatopsia (no color) | #808080 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D81BC
#5D81BC
oklch(60.2% 0.099 259.9)
- #A07933
#A07933
oklch(60.1% 0.1 79.4)
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 #5D81BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.023
- Off Blue #5684AE ΔE 0.027
- Steel Blue #4682B4 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.031
- Faded Blue #658CBB ΔE 0.034
- Windows Blue #3778BF ΔE 0.049
- Stormy Blue #507B9C ΔE 0.053
- Water Blue #0E87CC ΔE 0.054
Use #5D81BC 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.