#5187AA
Closest named color: Dusty Blue (#5A86AD). oklch(60% 0.079 238.4), rgb(81, 135, 170).
Aa
Black text reads best on this color (5.39:1).
About this color
#5187AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.079 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.011 away. Black text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #5187AA |
| RGB | rgb(81, 135, 170) |
| HSL | hsl(204, 35%, 49%) |
| OKLCH | oklch(60% 0.079 238.4) |
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 #5187AA | 3.89:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #5187AA | 5.39:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #5187AA text on white | 3.89:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #5187AA text on black | 5.39:1 | AA | Lc -35.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#ABC5D7
oklch(81% 0.038 238.2)
-
Step 400
400
#7DA7C3
oklch(70.8% 0.061 237.9)
-
Step 500
500 (this color)
#5187AA
oklch(60% 0.079 238.4)
-
Step 600
600
#3E7AA0
oklch(55.6% 0.086 238.7)
-
Step 700
700
#306789
oklch(49.2% 0.08 238.5)
-
Step 800
800
#29546F
oklch(42.7% 0.066 238.5)
-
Step 900
900
#26455A
oklch(37.6% 0.052 239.7)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#5187AA 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) | #7786AC | 0.045 |
| Deuteranopia (no green cones) | #6B7DA9 | 0.038 |
| Tritanopia (no blue cones) | #1E9093 | 0.062 |
| Achromatopsia (no color) | #818181 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5187AA
#5187AA
oklch(60% 0.079 238.4)
- #A47550
#A47550
oklch(60.1% 0.079 58.8)
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 #5187AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.011
- Off Blue #5684AE ΔE 0.013
- Cool Blue #4984B8 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.027
- Stormy Blue #507B9C ΔE 0.036
- Faded Blue #658CBB ΔE 0.037
- Blue NCS #118AB2 ΔE 0.038
- Cerulean #457B9D ΔE 0.040
Use #5187AA 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.