#33445F
Closest named color: Dark Grey Blue (#29465B). oklch(38.4% 0.051 259.4), rgb(51, 68, 95).
Aa
White text reads best on this color (9.84:1).
About this color
#33445F is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.051 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.016 away. White text reads best on it, at 9.84:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.84:1 |
Values
| HEX | #33445F |
| RGB | rgb(51, 68, 95) |
| HSL | hsl(217, 30%, 29%) |
| OKLCH | oklch(38.4% 0.051 259.4) |
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 #33445F | 9.84:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #33445F | 2.13:1 | Fails | Lc 11.1 | Not readable |
| #33445F text on white | 9.84:1 | AAA | Lc 92.8 | Preferred for body text |
| #33445F text on black | 2.13:1 | Fails | Lc -9.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C2DA
oklch(81% 0.038 258.4)
-
Step 400
400
#8AA2C8
oklch(70.7% 0.062 259.5)
-
Step 500
500
#6D8AB9
oklch(63% 0.079 259.9)
-
Step 600
600
#5574A5
oklch(55.6% 0.085 259.3)
-
Step 700
700
#45618E
oklch(49.1% 0.08 259.6)
-
Step 800
800
#394F73
oklch(42.6% 0.066 259.9)
-
Step 900
900 (this color)
#33445F
oklch(38.4% 0.051 259.4)
-
Step 950
950
#1D2736
oklch(27% 0.031 258.3)
#33445F 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) | #3A4660 | 0.012 |
| Deuteranopia (no green cones) | #35415E | 0.009 |
| Tritanopia (no blue cones) | #234A4D | 0.046 |
| Achromatopsia (no color) | #434343 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33445F
#33445F
oklch(38.4% 0.051 259.4)
- #524022
#524022
oklch(38.3% 0.051 79.1)
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 #33445F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.016
- Charcoal #264653 ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.052
- Onyx #343A40 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
Use #33445F 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.