#547FBB
Closest named color: Cool Blue (#4984B8). oklch(59.2% 0.104 256.9), rgb(84, 127, 187).
Aa
Black text reads best on this color (5.13:1).
About this color
#547FBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.104 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.018 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #547FBB |
| RGB | rgb(84, 127, 187) |
| HSL | hsl(215, 43%, 53%) |
| OKLCH | oklch(59.2% 0.104 256.9) |
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 #547FBB | 4.09:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #547FBB | 5.13:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #547FBB text on white | 4.09:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #547FBB text on black | 5.13:1 | AA | Lc -33.7 | 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
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#AEC2DF
oklch(80.8% 0.047 257.6)
-
Step 400
400
#83A3CF
oklch(70.8% 0.074 256.4)
-
Step 500
500
#638BC3
oklch(63.1% 0.096 256.9)
-
Step 600
600 (this color)
#547FBB
oklch(59.2% 0.104 256.9)
-
Step 700
700
#3B6197
oklch(49% 0.097 257.3)
-
Step 800
800
#31507A
oklch(42.8% 0.079 256.4)
-
Step 900
900
#2B4262
oklch(37.6% 0.062 256.8)
-
Step 950
950
#1A273A
oklch(27% 0.04 257.8)
#547FBB 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) | #6783BE | 0.026 |
| Deuteranopia (no green cones) | #5A79BA | 0.017 |
| Tritanopia (no blue cones) | #128C94 | 0.093 |
| Achromatopsia (no color) | #7D7D7D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #547FBB
#547FBB
oklch(59.2% 0.104 256.9)
- #A0752B
#A0752B
oklch(59.2% 0.104 77.5)
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 #547FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.018
- Steel Blue #4682B4 ΔE 0.021
- Off Blue #5684AE ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.034
- Windows Blue #3778BF ΔE 0.037
- Faded Blue #658CBB ΔE 0.044
- Water Blue #0E87CC ΔE 0.048
- Stormy Blue #507B9C ΔE 0.048
Use #547FBB 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.