#547DBB
Closest named color: Cool Blue (#4984B8). oklch(58.7% 0.106 258.4), rgb(84, 125, 187).
Aa
Black text reads best on this color (5.02:1).
About this color
#547DBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 258°. 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 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #547DBB |
| RGB | rgb(84, 125, 187) |
| HSL | hsl(216, 43%, 53%) |
| OKLCH | oklch(58.7% 0.106 258.4) |
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 #547DBB | 4.17:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #547DBB | 5.02:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #547DBB text on white | 4.17:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #547DBB text on black | 5.02:1 | AA | Lc -33.0 | 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 600.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEB
oklch(88.5% 0.026 259)
-
Step 300
300
#AEC2E0
oklch(80.9% 0.048 258.4)
-
Step 400
400
#83A2D1
oklch(70.7% 0.077 258.5)
-
Step 500
500
#648BC4
oklch(63.2% 0.097 257.8)
-
Step 600
600 (this color)
#547DBB
oklch(58.7% 0.106 258.4)
-
Step 700
700
#3C6198
oklch(49.1% 0.098 258.1)
-
Step 800
800
#324F7B
oklch(42.6% 0.081 258.5)
-
Step 900
900
#2C4263
oklch(37.7% 0.063 258.3)
-
Step 950
950
#1A273A
oklch(27% 0.04 257.8)
#547DBB 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) | #6481BE | 0.023 |
| Deuteranopia (no green cones) | #5778BA | 0.014 |
| Tritanopia (no blue cones) | #138B93 | 0.096 |
| Achromatopsia (no color) | #7C7C7C | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #547DBB
#547DBB
oklch(58.7% 0.106 258.4)
- #9E7426
#9E7426
oklch(58.7% 0.106 79)
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 #547DBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.023
- Steel Blue #4682B4 ΔE 0.024
- Off Blue #5684AE ΔE 0.032
- Windows Blue #3778BF ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.048
- Stormy Blue #507B9C ΔE 0.049
- Water Blue #0E87CC ΔE 0.049
Use #547DBB 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.