#3551AE
Closest named color: Blueberry (#464196). oklch(46.7% 0.152 267.5), rgb(53, 81, 174).
Aa
White text reads best on this color (7.14:1).
About this color
#3551AE is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.152 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.055 away. White text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.93:1 |
| White text | 7.14:1 |
Values
| HEX | #3551AE |
| RGB | rgb(53, 81, 174) |
| HSL | hsl(226, 53%, 45%) |
| OKLCH | oklch(46.7% 0.152 267.5) |
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 #3551AE | 7.14:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #3551AE | 2.93:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #3551AE text on white | 7.14:1 | AAA | Lc 84.4 | Fine for body text |
| #3551AE text on black | 2.93:1 | Fails | Lc -17.6 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#809DEA
oklch(70.6% 0.118 267.6)
-
Step 500
500
#6183E4
oklch(63% 0.151 267.4)
-
Step 600
600
#496AD2
oklch(55.5% 0.164 267.6)
-
Step 700
700 (this color)
#3551AE
oklch(46.7% 0.152 267.5)
-
Step 800
800
#314993
oklch(42.8% 0.125 267.4)
-
Step 900
900
#2B3D75
oklch(37.6% 0.098 268)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#3551AE 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) | #105EB1 | 0.038 |
| Deuteranopia (no green cones) | #0052AC | 0.033 |
| Tritanopia (no blue cones) | #006777 | 0.124 |
| Achromatopsia (no color) | #585858 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3551AE
#3551AE
oklch(46.7% 0.152 267.5)
- #715600
#715600
oklch(46.8% 0.096 87.4)
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 #3551AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.057
- Dusk Blue #26538D ΔE 0.058
- Blue Blue #2242C7 ΔE 0.058
- Cobalt #1E488F ΔE 0.062
- Twilight #4E518B ΔE 0.064
- Mid Blue #276AB3 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.066
Use #3551AE 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.