#333658
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.059 279), rgb(51, 54, 88).
Aa
White text reads best on this color (11.60:1).
About this color
#333658 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.059 and its hue 279°. 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 11.60:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #333658 |
| RGB | rgb(51, 54, 88) |
| HSL | hsl(235, 27%, 27%) |
| OKLCH | oklch(34.7% 0.059 279) |
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 #333658 | 11.60:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #333658 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #333658 text on white | 11.60:1 | AAA | Lc 96.7 | Preferred for body text |
| #333658 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#969CCD
oklch(70.6% 0.072 279)
-
Step 500
500
#7D84C0
oklch(63.2% 0.09 278.4)
-
Step 600
600
#676CAC
oklch(55.5% 0.099 279.2)
-
Step 700
700
#565A94
oklch(49.1% 0.092 279.4)
-
Step 800
800
#464A78
oklch(42.7% 0.076 278.9)
-
Step 900
900 (this color)
#333658
oklch(34.7% 0.059 279)
-
Step 950
950
#222439
oklch(26.9% 0.039 279.2)
#333658 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) | #2B3A59 | 0.016 |
| Deuteranopia (no green cones) | #283757 | 0.017 |
| Tritanopia (no blue cones) | #283D43 | 0.052 |
| Achromatopsia (no color) | #393939 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333658
#333658
oklch(34.7% 0.059 279)
- #413A11
#413A11
oklch(34.6% 0.059 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 #333658, 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 0.039
- Gunmetal #293241 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Onyx #343A40 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Midnight Green #073B4C ΔE 0.056
- Marine Blue #01386A ΔE 0.056
Use #333658 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.