#3355AB
Closest named color: Denim Blue (#3B5B92). oklch(47.2% 0.143 265.1), rgb(51, 85, 171).
Aa
White text reads best on this color (6.93:1).
About this color
#3355AB is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.143 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.047 away. White text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #3355AB |
| RGB | rgb(51, 85, 171) |
| HSL | hsl(223, 54%, 44%) |
| OKLCH | oklch(47.2% 0.143 265.1) |
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 #3355AB | 6.93:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #3355AB | 3.02:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #3355AB text on white | 6.93:1 | AA | Lc 83.6 | Fine for body text |
| #3355AB text on black | 3.02:1 | AA large text | Lc -18.3 | 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
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1EE
oklch(81% 0.068 264.5)
-
Step 400
400
#7F9FE6
oklch(70.7% 0.111 265.2)
-
Step 500
500
#5F85DF
oklch(63.1% 0.142 265.3)
-
Step 600
600
#466DCD
oklch(55.6% 0.155 265.1)
-
Step 700
700 (this color)
#3355AB
oklch(47.2% 0.143 265.1)
-
Step 800
800
#2E4A8F
oklch(42.6% 0.119 265.1)
-
Step 900
900
#293F72
oklch(37.7% 0.092 264.8)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#3355AB 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) | #245FAE | 0.027 |
| Deuteranopia (no green cones) | #0054A9 | 0.032 |
| Tritanopia (no blue cones) | #006978 | 0.115 |
| Achromatopsia (no color) | #5A5A5A | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3355AB
#3355AB
oklch(47.2% 0.143 265.1)
- #745600
#745600
oklch(47.2% 0.097 85)
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 #3355AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.047
- Dusk Blue #26538D ΔE 0.051
- Dusky Blue #475F94 ΔE 0.056
- Mid Blue #276AB3 ΔE 0.056
- Twilight #4E518B ΔE 0.059
- Blueberry #464196 ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.062
- Cobalt #1E488F ΔE 0.062
Use #3355AB 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.