#5A71AA
Closest named color: Flat Blue (#3C73A8). oklch(55.5% 0.093 266.7), rgb(90, 113, 170).
Aa
White text reads best on this color (4.79:1).
About this color
#5A71AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.093 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.033 away. White text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #5A71AA |
| RGB | rgb(90, 113, 170) |
| HSL | hsl(223, 32%, 51%) |
| OKLCH | oklch(55.5% 0.093 266.7) |
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 #5A71AA | 4.79:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #5A71AA | 4.37:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #5A71AA text on white | 4.79:1 | AA | Lc 73.2 | Content text, not long reading |
| #5A71AA text on black | 4.37:1 | AA large text | Lc -28.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DD
oklch(81% 0.042 265.7)
-
Step 400
400
#8DA0CB
oklch(70.7% 0.067 266.1)
-
Step 500
500
#7288BE
oklch(63.1% 0.086 266.9)
-
Step 600
600 (this color)
#5A71AA
oklch(55.5% 0.093 266.7)
-
Step 700
700
#4A5F92
oklch(49.2% 0.086 266.3)
-
Step 800
800
#3D4D77
oklch(42.6% 0.073 267.4)
-
Step 900
900
#344160
oklch(37.8% 0.056 266.4)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#5A71AA 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) | #5C76AC | 0.014 |
| Deuteranopia (no green cones) | #546FA9 | 0.010 |
| Tritanopia (no blue cones) | #3B7D86 | 0.083 |
| Achromatopsia (no color) | #727272 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A71AA
#5A71AA
oklch(55.5% 0.093 266.7)
- #8B6F2A
#8B6F2A
oklch(55.5% 0.093 86.5)
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 #5A71AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.033
- Dull Blue #49759C ΔE 0.034
- French Blue #436BAD ΔE 0.035
- Muted Blue #3B719F ΔE 0.040
- Stormy Blue #507B9C ΔE 0.042
- Cerulean #457B9D ΔE 0.045
- Windows Blue #3778BF ΔE 0.045
- Steel Blue #4682B4 ΔE 0.048
Use #5A71AA 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.