#333547
Closest named color: Gunmetal (#293241). oklch(33.5% 0.032 279.6), rgb(51, 53, 71).
Aa
White text reads best on this color (12.06:1).
About this color
#333547 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.032 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.022 away. White text reads best on it, at 12.06:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.74:1 |
| White text | 12.06:1 |
Values
| HEX | #333547 |
| RGB | rgb(51, 53, 71) |
| HSL | hsl(234, 16%, 24%) |
| OKLCH | oklch(33.5% 0.032 279.6) |
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 #333547 | 12.06:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #333547 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #333547 text on white | 12.06:1 | AAA | Lc 97.6 | Preferred for body text |
| #333547 text on black | 1.74:1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BDBFD0
oklch(80.8% 0.024 280.5)
-
Step 400
400
#9B9FB9
oklch(70.8% 0.038 278.5)
-
Step 500
500
#8387A7
oklch(63.2% 0.048 279.3)
-
Step 600
600
#6D7092
oklch(55.6% 0.053 280.6)
-
Step 700
700
#5B5E7D
oklch(49.2% 0.05 280.1)
-
Step 800
800
#4A4D65
oklch(42.7% 0.04 279)
-
Step 900
900 (this color)
#333547
oklch(33.5% 0.032 279.6)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#333547 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) | #303748 | 0.007 |
| Deuteranopia (no green cones) | #2F3547 | 0.007 |
| Tritanopia (no blue cones) | #2E383B | 0.028 |
| Achromatopsia (no color) | #363636 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333547
#333547
oklch(33.5% 0.032 279.6)
- #3A3724
#3A3724
oklch(33.4% 0.031 100.3)
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 #333547, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.022
- Onyx #343A40 ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.047
- Midnight Green #073B4C ΔE 0.048
- Charcoal #264653 ΔE 0.054
Use #333547 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.