#5AA9DB
Closest named color: Greyblue (#77A1B5). oklch(70.5% 0.107 238.6), rgb(90, 169, 219).
Aa
Black text reads best on this color (8.13:1).
About this color
#5AA9DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.107 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.058 away. Black text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #5AA9DB |
| RGB | rgb(90, 169, 219) |
| HSL | hsl(203, 64%, 61%) |
| OKLCH | oklch(70.5% 0.107 238.6) |
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 #5AA9DB | 2.58:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #5AA9DB | 8.13:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #5AA9DB text on white | 2.58:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #5AA9DB text on black | 8.13:1 | AAA | Lc -51.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#99C7E7
oklch(80.8% 0.066 239)
-
Step 400
400 (this color)
#5AA9DB
oklch(70.5% 0.107 238.6)
-
Step 500
500
#1493D2
oklch(63.1% 0.137 238.6)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#042A3F
oklch(27.1% 0.056 238.5)
#5AA9DB 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) | #92A8DD | 0.060 |
| Deuteranopia (no green cones) | #809BDA | 0.051 |
| Tritanopia (no blue cones) | #00B6BA | 0.080 |
| Achromatopsia (no color) | #A1A1A1 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5AA9DB
#5AA9DB
oklch(70.5% 0.107 238.6)
- #D18F59
#D18F59
oklch(70.5% 0.107 59.1)
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 #5AA9DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.058
- Turquoise Blue #06B1C4 ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.067
- Bluegrey #85A3B2 ΔE 0.068
- Deep Sky Blue #00BFFF ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.072
- Bluey Grey #89A0B0 ΔE 0.073
- Cool Gray #8D99AE ΔE 0.081
Use #5AA9DB 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.