#5C81BF
Closest named color: Cool Blue (#4984B8). oklch(60.3% 0.104 260.3), rgb(92, 129, 191).
Aa
Black text reads best on this color (5.34:1).
About this color
#5C81BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.104 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.025 away. Black text reads best on it, at 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.34:1 |
| White text | 3.92:1 |
Values
| HEX | #5C81BF |
| RGB | rgb(92, 129, 191) |
| HSL | hsl(218, 44%, 55%) |
| OKLCH | oklch(60.3% 0.104 260.3) |
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 #5C81BF | 3.92:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #5C81BF | 5.34:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #5C81BF text on white | 3.92:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #5C81BF text on black | 5.34:1 | AA | Lc -35.1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AEC2E2
oklch(81% 0.05 259.8)
-
Step 400
400
#83A2D4
oklch(70.8% 0.081 259.8)
-
Step 500
500 (this color)
#5C81BF
oklch(60.3% 0.104 260.3)
-
Step 600
600
#4B73B5
oklch(55.7% 0.113 260)
-
Step 700
700
#3C609C
oklch(49.1% 0.105 260.1)
-
Step 800
800
#324E7E
oklch(42.6% 0.087 260.6)
-
Step 900
900
#2C4165
oklch(37.6% 0.068 260.7)
-
Step 950
950
#1A273B
oklch(27.1% 0.042 258.8)
#5C81BF 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) | #6986C2 | 0.022 |
| Deuteranopia (no green cones) | #5D7CBE | 0.014 |
| Tritanopia (no blue cones) | #2B8F97 | 0.094 |
| Achromatopsia (no color) | #808080 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C81BF
#5C81BF
oklch(60.3% 0.104 260.3)
- #A1792E
#A1792E
oklch(60.2% 0.104 80)
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 #5C81BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.025
- Steel Blue #4682B4 ΔE 0.030
- Off Blue #5684AE ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.035
- Faded Blue #658CBB ΔE 0.036
- Windows Blue #3778BF ΔE 0.048
- Water Blue #0E87CC ΔE 0.052
- Stormy Blue #507B9C ΔE 0.057
Use #5C81BF 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.