#33405F
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.056 266.3), rgb(51, 64, 95).
Aa
White text reads best on this color (10.29:1).
About this color
#33405F is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.056 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 10.29:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.03:1 |
| White text | 10.29:1 |
Values
| HEX | #33405F |
| RGB | rgb(51, 64, 95) |
| HSL | hsl(222, 30%, 29%) |
| OKLCH | oklch(37.4% 0.056 266.3) |
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 #33405F | 10.29:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #33405F | 2.03:1 | Fails | Lc 10.1 | Not readable |
| #33405F text on white | 10.29:1 | AAA | Lc 93.9 | Preferred for body text |
| #33405F text on black | 2.03:1 | Fails | Lc -8.7 | 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
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DD
oklch(81% 0.042 265.7)
-
Step 400
400
#8DA0CC
oklch(70.7% 0.068 266.5)
-
Step 500
500
#7188BE
oklch(63% 0.086 266.3)
-
Step 600
600
#5A71AA
oklch(55.5% 0.093 266.7)
-
Step 700
700
#4A5F92
oklch(49.2% 0.086 266.3)
-
Step 800
800
#3D4E77
oklch(42.9% 0.072 266.3)
-
Step 900
900 (this color)
#33405F
oklch(37.4% 0.056 266.3)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#33405F 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) | #354360 | 0.010 |
| Deuteranopia (no green cones) | #313F5E | 0.005 |
| Tritanopia (no blue cones) | #23464B | 0.050 |
| Achromatopsia (no color) | #404040 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33405F
#33405F
oklch(37.4% 0.056 266.3)
- #4E3F1B
#4E3F1B
oklch(37.5% 0.056 86.8)
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 #33405F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.053
- Onyx #343A40 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.056
- Marine Blue #01386A ΔE 0.060
Use #33405F 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.