#3553A4
Closest named color: Denim Blue (#3B5B92). oklch(46.4% 0.135 266), rgb(53, 83, 164).
Aa
White text reads best on this color (7.18:1).
About this color
#3553A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.135 and its hue 266°. 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 7.18:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #3553A4 |
| RGB | rgb(53, 83, 164) |
| HSL | hsl(224, 51%, 43%) |
| OKLCH | oklch(46.4% 0.135 266) |
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 #3553A4 | 7.18:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #3553A4 | 2.92:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #3553A4 text on white | 7.18:1 | AAA | Lc 84.6 | Fine for body text |
| #3553A4 text on black | 2.92:1 | Fails | Lc -17.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ADC0EC
oklch(80.8% 0.066 266.6)
-
Step 400
400
#829FE2
oklch(70.7% 0.104 265.9)
-
Step 500
500
#6385DA
oklch(63% 0.134 266.2)
-
Step 600
600
#4B6DC8
oklch(55.5% 0.146 266.3)
-
Step 700
700 (this color)
#3553A4
oklch(46.4% 0.135 266)
-
Step 800
800
#324B8C
oklch(42.8% 0.112 266)
-
Step 900
900
#2B3F70
oklch(37.7% 0.088 265.7)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#3553A4 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) | #275DA7 | 0.028 |
| Deuteranopia (no green cones) | #0A53A2 | 0.031 |
| Tritanopia (no blue cones) | #006673 | 0.113 |
| Achromatopsia (no color) | #575757 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3553A4
#3553A4
oklch(46.4% 0.135 266)
- #715400
#715400
oklch(46.4% 0.095 85.4)
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 #3553A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
- Twilight #4E518B ΔE 0.050
- Blueberry #464196 ΔE 0.051
- Cobalt #1E488F ΔE 0.052
- Dusky Blue #475F94 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.054
- Light Navy #155084 ΔE 0.062
Use #3553A4 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.