#33519C
Closest named color: Dusk Blue (#26538D). oklch(45.3% 0.127 265.3), rgb(51, 81, 156).
Aa
White text reads best on this color (7.50:1).
About this color
#33519C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.127 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.030 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #33519C |
| RGB | rgb(51, 81, 156) |
| HSL | hsl(223, 51%, 41%) |
| OKLCH | oklch(45.3% 0.127 265.3) |
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 #33519C | 7.50:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #33519C | 2.79:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #33519C text on white | 7.50:1 | AAA | Lc 85.8 | Fine for body text |
| #33519C text on black | 2.79:1 | Fails | Lc -16.2 | 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 800.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#A9C0F2
oklch(80.8% 0.075 265.5)
-
Step 400
400
#7D9EEB
oklch(70.6% 0.119 265.8)
-
Step 500
500
#5C84E5
oklch(63% 0.153 265.4)
-
Step 600
600
#436CD3
oklch(55.7% 0.165 265.1)
-
Step 700
700
#3559B7
oklch(49.1% 0.155 265.3)
-
Step 800
800 (this color)
#33519C
oklch(45.3% 0.127 265.3)
-
Step 900
900
#283E76
oklch(37.7% 0.1 265.7)
-
Step 950
950
#172545
oklch(27% 0.063 264.7)
#33519C 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) | #2A5A9F | 0.025 |
| Deuteranopia (no green cones) | #14509A | 0.026 |
| Tritanopia (no blue cones) | #00626F | 0.104 |
| Achromatopsia (no color) | #555555 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33519C
#33519C
oklch(45.3% 0.127 265.3)
- #6D5100
#6D5100
oklch(45.2% 0.093 85.5)
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 #33519C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.037
- Cobalt #1E488F ΔE 0.041
- Twilight #4E518B ΔE 0.044
- Blueberry #464196 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Light Navy #155084 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.053
Use #33519C 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.