#33355B
Closest named color: Prussian Blue (#1D3557). oklch(34.6% 0.066 280.1), rgb(51, 53, 91).
Aa
White text reads best on this color (11.65:1).
About this color
#33355B is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.066 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 11.65:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #33355B |
| RGB | rgb(51, 53, 91) |
| HSL | hsl(237, 28%, 28%) |
| OKLCH | oklch(34.6% 0.066 280.1) |
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 #33355B | 11.65:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #33355B | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #33355B text on white | 11.65:1 | AAA | Lc 96.7 | Preferred for body text |
| #33355B text on black | 1.80:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D8EC
oklch(88.6% 0.028 279)
-
Step 300
300
#BABEE1
oklch(81% 0.049 280.1)
-
Step 400
400
#969BD2
oklch(70.6% 0.08 280.1)
-
Step 500
500
#7E82C6
oklch(63.1% 0.102 280.5)
-
Step 600
600
#676BB2
oklch(55.6% 0.109 279.8)
-
Step 700
700
#565999
oklch(49.1% 0.101 279.9)
-
Step 800
800
#46497C
oklch(42.7% 0.084 279.6)
-
Step 900
900 (this color)
#33355B
oklch(34.6% 0.066 280.1)
-
Step 950
950
#22243B
oklch(27% 0.043 279.3)
#33355B 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) | #283A5C | 0.021 |
| Deuteranopia (no green cones) | #26375A | 0.020 |
| Tritanopia (no blue cones) | #273D43 | 0.059 |
| Achromatopsia (no color) | #383838 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33355B
#33355B
oklch(34.6% 0.066 280.1)
- #423A08
#423A08
oklch(34.7% 0.066 99.6)
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 #33355B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Gunmetal #293241 ΔE 0.050
- Marine Blue #01386A ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.054
- Onyx #343A40 ΔE 0.055
- Midnight Green #073B4C ΔE 0.060
Use #33355B 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.