#5B9ABA
Closest named color: Greyblue (#77A1B5). oklch(65.6% 0.081 231.9), rgb(91, 154, 186).
Aa
Black text reads best on this color (6.77:1).
About this color
#5B9ABA is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.081 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.040 away. Black text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.77:1 |
| White text | 3.09:1 |
Values
| HEX | #5B9ABA |
| RGB | rgb(91, 154, 186) |
| HSL | hsl(200, 41%, 54%) |
| OKLCH | oklch(65.6% 0.081 231.9) |
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 #5B9ABA | 3.09:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #5B9ABA | 6.77:1 | AA | Lc 46.2 | Large or bold text, headings |
| #5B9ABA text on white | 3.09:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #5B9ABA text on black | 6.77:1 | AA | Lc -43.9 | 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
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A8C6D6
oklch(81% 0.039 231.2)
-
Step 400
400
#78A8C1
oklch(70.6% 0.063 231.5)
-
Step 500
500 (this color)
#5B9ABA
oklch(65.6% 0.081 231.9)
-
Step 600
600
#357C9E
oklch(55.6% 0.088 232.2)
-
Step 700
700
#276887
oklch(49% 0.082 232.7)
-
Step 800
800
#22556E
oklch(42.7% 0.068 232.9)
-
Step 900
900
#224659
oklch(37.6% 0.053 233.6)
-
Step 950
950
#142934
oklch(26.9% 0.034 232.8)
#5B9ABA 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) | #8A98BC | 0.055 |
| Deuteranopia (no green cones) | #7D8EBA | 0.048 |
| Tritanopia (no blue cones) | #25A3A4 | 0.061 |
| Achromatopsia (no color) | #929292 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9ABA
#5B9ABA
oklch(65.6% 0.081 231.9)
- #B98363
#B98363
oklch(65.6% 0.081 51.5)
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 #5B9ABA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.040
- Faded Blue #658CBB ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.045
- Blue Grey #758DA3 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.058
- Cool Gray #8D99AE ΔE 0.059
Use #5B9ABA 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.