#5281BB
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.103 254.4), rgb(82, 129, 187).
Aa
Black text reads best on this color (5.21:1).
About this color
#5281BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.103 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.013 away. Black text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #5281BB |
| RGB | rgb(82, 129, 187) |
| HSL | hsl(213, 44%, 53%) |
| OKLCH | oklch(59.5% 0.103 254.4) |
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 #5281BB | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #5281BB | 5.21:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #5281BB text on white | 4.02:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #5281BB text on black | 5.21:1 | AA | Lc -34.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA3D2
oklch(70.6% 0.08 254.7)
-
Step 500
500 (this color)
#5281BB
oklch(59.5% 0.103 254.4)
-
Step 600
600
#4275B3
oklch(55.6% 0.112 254.4)
-
Step 700
700
#34629A
oklch(49.1% 0.104 254.5)
-
Step 800
800
#2B507D
oklch(42.6% 0.087 254.4)
-
Step 900
900
#274365
oklch(37.8% 0.068 254.1)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#5281BB 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) | #6984BD | 0.029 |
| Deuteranopia (no green cones) | #5C7ABA | 0.021 |
| Tritanopia (no blue cones) | #018E96 | 0.090 |
| Achromatopsia (no color) | #7F7F7F | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5281BB
#5281BB
oklch(59.5% 0.103 254.4)
- #A3752F
#A3752F
oklch(59.6% 0.103 74.6)
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 #5281BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.013
- Steel Blue #4682B4 ΔE 0.017
- Off Blue #5684AE ΔE 0.024
- Dusty Blue #5A86AD ΔE 0.030
- Windows Blue #3778BF ΔE 0.040
- Faded Blue #658CBB ΔE 0.040
- Water Blue #0E87CC ΔE 0.045
- Stormy Blue #507B9C ΔE 0.048
Use #5281BB 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.