#5B8AAF
Closest named color: Dusty Blue (#5A86AD). oklch(61.5% 0.076 243.2), rgb(91, 138, 175).
Aa
Black text reads best on this color (5.69:1).
About this color
#5B8AAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.076 and its hue 243°. 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 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #5B8AAF |
| RGB | rgb(91, 138, 175) |
| HSL | hsl(206, 34%, 52%) |
| OKLCH | oklch(61.5% 0.076 243.2) |
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 #5B8AAF | 3.68:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #5B8AAF | 5.69:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #5B8AAF text on white | 3.68:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #5B8AAF text on black | 5.69:1 | AA | Lc -37.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D7
oklch(80.9% 0.037 243.1)
-
Step 400
400
#81A5C3
oklch(70.6% 0.059 243.9)
-
Step 500
500 (this color)
#5B8AAF
oklch(61.5% 0.076 243.2)
-
Step 600
600
#4579A0
oklch(55.6% 0.083 242.6)
-
Step 700
700
#376589
oklch(49% 0.077 243.9)
-
Step 800
800
#2E536F
oklch(42.7% 0.063 242.8)
-
Step 900
900
#29455A
oklch(37.8% 0.05 242.1)
-
Step 950
950
#192835
oklch(27% 0.032 245.5)
#5B8AAF 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) | #7A8AB1 | 0.038 |
| Deuteranopia (no green cones) | #6F81AE | 0.032 |
| Tritanopia (no blue cones) | #359396 | 0.063 |
| Achromatopsia (no color) | #858585 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8AAF
#5B8AAF
oklch(61.5% 0.076 243.2)
- #A57B53
#A57B53
oklch(61.5% 0.076 64.2)
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 #5B8AAF, 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 0.019
- Faded Blue #658CBB ΔE 0.023
- Cool Blue #4984B8 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.037
- Blue Grey #758DA3 ΔE 0.038
- Light Slate Gray #778899 ΔE 0.044
Use #5B8AAF 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.