#5B87A3
Closest named color: Dusty Blue (#5A86AD). oklch(60.2% 0.064 237.2), rgb(91, 135, 163).
Aa
Black text reads best on this color (5.43:1).
About this color
#5B87A3 is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.064 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.017 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #5B87A3 |
| RGB | rgb(91, 135, 163) |
| HSL | hsl(203, 28%, 50%) |
| OKLCH | oklch(60.2% 0.064 237.2) |
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 #5B87A3 | 3.86:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #5B87A3 | 5.43:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #5B87A3 text on white | 3.86:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #5B87A3 text on black | 5.43:1 | AA | Lc -35.7 | 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 500.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AEC4D3
oklch(80.8% 0.032 237.7)
-
Step 400
400
#83A6BD
oklch(70.7% 0.051 237.2)
-
Step 500
500 (this color)
#5B87A3
oklch(60.2% 0.064 237.2)
-
Step 600
600
#497A97
oklch(55.7% 0.07 235.9)
-
Step 700
700
#3A6681
oklch(49% 0.065 237.1)
-
Step 800
800
#315369
oklch(42.6% 0.054 238.2)
-
Step 900
900
#2B4555
oklch(37.6% 0.042 236.5)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#5B87A3 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) | #7A86A4 | 0.039 |
| Deuteranopia (no green cones) | #707EA3 | 0.034 |
| Tritanopia (no blue cones) | #3D8E90 | 0.050 |
| Achromatopsia (no color) | #828282 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B87A3
#5B87A3
oklch(60.2% 0.064 237.2)
- #9F775B
#9F775B
oklch(60.2% 0.064 56.1)
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 #5B87A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.017
- Off Blue #5684AE ΔE 0.022
- Steel #738595 ΔE 0.033
- Slate Gray #708090 ΔE 0.036
- Grey Blue #647D8E ΔE 0.036
- Light Slate Gray #778899 ΔE 0.037
- Blue Grey #758DA3 ΔE 0.038
- Stormy Blue #507B9C ΔE 0.038
Use #5B87A3 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.