#5AA9DF
Closest named color: Greyblue (#77A1B5). oklch(70.7% 0.111 240.7), rgb(90, 169, 223).
Aa
Black text reads best on this color (8.17:1).
About this color
#5AA9DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.111 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.063 away. Black text reads best on it, at 8.17:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.17:1 |
| White text | 2.56:1 |
Values
| HEX | #5AA9DF |
| RGB | rgb(90, 169, 223) |
| HSL | hsl(204, 68%, 61%) |
| OKLCH | oklch(70.7% 0.111 240.7) |
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 #5AA9DF | 2.56:1 | Fails | Lc -55.2 | Large or bold text, headings |
| Black text on #5AA9DF | 8.17:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #5AA9DF text on white | 2.56:1 | Fails | Lc 50.1 | Large or bold text, headings |
| #5AA9DF text on black | 8.17:1 | AAA | Lc -51.9 | 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
#C3DDF1
oklch(88.5% 0.039 241.1)
-
Step 300
300
#98C7EA
oklch(80.9% 0.07 240.9)
-
Step 400
400 (this color)
#5AA9DF
oklch(70.7% 0.111 240.7)
-
Step 500
500
#1292D6
oklch(63% 0.142 240.6)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950
#032940
oklch(26.9% 0.059 241)
#5AA9DF 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) | #91A9E2 | 0.059 |
| Deuteranopia (no green cones) | #7F9CDE | 0.048 |
| Tritanopia (no blue cones) | #00B6BB | 0.084 |
| Achromatopsia (no color) | #A1A1A1 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5AA9DF
#5AA9DF
oklch(70.7% 0.111 240.7)
- #D38F54
#D38F54
oklch(70.6% 0.112 60.4)
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 #5AA9DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.065
- Deep Sky Blue #00BFFF ΔE 0.068
- Chefchaouen Blue #4895EF ΔE 0.068
- Bluegrey #85A3B2 ΔE 0.073
- Bluey Grey #89A0B0 ΔE 0.077
- Carolina Blue #8AB8FE ΔE 0.079
Use #5AA9DF 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.