#33405D
Closest named color: Dark Grey Blue (#29465B). oklch(37.3% 0.053 265.4), rgb(51, 64, 93).
Aa
White text reads best on this color (10.33:1).
About this color
#33405D is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.053 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 10.33:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.03:1 |
| White text | 10.33:1 |
Values
| HEX | #33405D |
| RGB | rgb(51, 64, 93) |
| HSL | hsl(221, 29%, 28%) |
| OKLCH | oklch(37.3% 0.053 265.4) |
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 #33405D | 10.33:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #33405D | 2.03:1 | Fails | Lc 10.0 | Not readable |
| #33405D text on white | 10.33:1 | AAA | Lc 93.9 | Preferred for body text |
| #33405D text on black | 2.03:1 | Fails | Lc -8.6 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DB
oklch(80.9% 0.039 264.3)
-
Step 400
400
#8EA0C9
oklch(70.6% 0.064 266.3)
-
Step 500
500
#7289BB
oklch(63.2% 0.08 265.1)
-
Step 600
600
#5A72A7
oklch(55.6% 0.088 265.1)
-
Step 700
700
#4A5F90
oklch(49.1% 0.083 265.8)
-
Step 800
800
#3D4E75
oklch(42.7% 0.069 265.6)
-
Step 900
900 (this color)
#33405D
oklch(37.3% 0.053 265.4)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#33405D 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) | #36425E | 0.008 |
| Deuteranopia (no green cones) | #323F5C | 0.004 |
| Tritanopia (no blue cones) | #24464A | 0.048 |
| Achromatopsia (no color) | #404040 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33405D
#33405D
oklch(37.3% 0.053 265.4)
- #4D3E1D
#4D3E1D
oklch(37.2% 0.053 85.3)
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 #33405D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.049
- Onyx #343A40 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.058
- Midnight Green #073B4C ΔE 0.058
Use #33405D 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.