#3553AC
Closest named color: Denim Blue (#3B5B92). oklch(47% 0.147 266.7), rgb(53, 83, 172).
Aa
White text reads best on this color (7.03:1).
About this color
#3553AC is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.147 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.051 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #3553AC |
| RGB | rgb(53, 83, 172) |
| HSL | hsl(225, 53%, 44%) |
| OKLCH | oklch(47% 0.147 266.7) |
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 #3553AC | 7.03:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #3553AC | 2.98:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #3553AC text on white | 7.03:1 | AAA | Lc 84.0 | Fine for body text |
| #3553AC text on black | 2.98:1 | Fails | Lc -17.9 | 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
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ACC0F0
oklch(80.9% 0.072 267.1)
-
Step 400
400
#809EE8
oklch(70.7% 0.114 266.7)
-
Step 500
500
#6184E1
oklch(63.1% 0.146 266.7)
-
Step 600
600
#496CCF
oklch(55.7% 0.158 266.6)
-
Step 700
700 (this color)
#3553AC
oklch(47% 0.147 266.7)
-
Step 800
800
#304991
oklch(42.6% 0.123 266.8)
-
Step 900
900
#2A3E73
oklch(37.6% 0.094 266.4)
-
Step 950
950
#192544
oklch(27.1% 0.06 266.5)
#3553AC 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) | #1D5EAF | 0.032 |
| Deuteranopia (no green cones) | #0054AA | 0.033 |
| Tritanopia (no blue cones) | #006877 | 0.120 |
| Achromatopsia (no color) | #595959 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3553AC
#3553AC
oklch(47% 0.147 266.7)
- #725600
#725600
oklch(46.9% 0.096 86.6)
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 #3553AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.051
- Dusk Blue #26538D ΔE 0.054
- Blueberry #464196 ΔE 0.057
- Dusky Blue #475F94 ΔE 0.060
- Twilight #4E518B ΔE 0.060
- Mid Blue #276AB3 ΔE 0.061
- Cobalt #1E488F ΔE 0.061
- Blue Blue #2242C7 ΔE 0.064
Use #3553AC 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.