#3559AA
Closest named color: Denim Blue (#3B5B92). oklch(48.1% 0.136 264), rgb(53, 89, 170).
Aa
White text reads best on this color (6.64:1).
About this color
#3559AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.136 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.041 away. White text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.16:1 |
| White text | 6.64:1 |
Values
| HEX | #3559AA |
| RGB | rgb(53, 89, 170) |
| HSL | hsl(222, 52%, 44%) |
| OKLCH | oklch(48.1% 0.136 264) |
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 #3559AA | 6.64:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #3559AA | 3.16:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #3559AA text on white | 6.64:1 | AA | Lc 82.5 | Fine for body text |
| #3559AA text on black | 3.16:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF2
oklch(88.6% 0.036 262.8)
-
Step 300
300
#ABC1EC
oklch(80.9% 0.066 263.7)
-
Step 400
400
#7FA0E3
oklch(70.8% 0.105 263.8)
-
Step 500
500
#5F86DB
oklch(63% 0.136 264.3)
-
Step 600
600
#466EC8
oklch(55.5% 0.147 264.2)
-
Step 700
700 (this color)
#3559AA
oklch(48.1% 0.136 264)
-
Step 800
800
#2E4B8C
oklch(42.6% 0.113 264.1)
-
Step 900
900
#293F70
oklch(37.6% 0.089 264.3)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#3559AA 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) | #2F62AD | 0.024 |
| Deuteranopia (no green cones) | #1557A8 | 0.026 |
| Tritanopia (no blue cones) | #006C79 | 0.112 |
| Achromatopsia (no color) | #5C5C5C | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3559AA
#3559AA
oklch(48.1% 0.136 264)
- #785800
#785800
oklch(48.1% 0.099 84)
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 #3559AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.041
- Mid Blue #276AB3 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- Dusk Blue #26538D ΔE 0.052
- French Blue #436BAD ΔE 0.054
- Twilight #4E518B ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.057
- Denim #3B638C ΔE 0.062
Use #3559AA 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.