#333753
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.6% 0.049 277.3), rgb(51, 55, 83).
Aa
White text reads best on this color (11.58:1).
About this color
#333753 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.049 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.033 away. White text reads best on it, at 11.58:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.81:1 |
| White text | 11.58:1 |
Values
| HEX | #333753 |
| RGB | rgb(51, 55, 83) |
| HSL | hsl(233, 24%, 26%) |
| OKLCH | oklch(34.6% 0.049 277.3) |
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 #333753 | 11.58:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #333753 | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #333753 text on white | 11.58:1 | AAA | Lc 96.6 | Preferred for body text |
| #333753 text on black | 1.81:1 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#BABFD9
oklch(80.9% 0.037 276.9)
-
Step 400
400
#979EC6
oklch(70.8% 0.059 277)
-
Step 500
500
#7E85B7
oklch(63% 0.076 277.8)
-
Step 600
600
#676FA3
oklch(55.7% 0.081 276.7)
-
Step 700
700
#565C8C
oklch(49% 0.077 277.7)
-
Step 800
800
#464C71
oklch(42.8% 0.062 276.4)
-
Step 900
900 (this color)
#333753
oklch(34.6% 0.049 277.3)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#333753 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) | #2E3A54 | 0.011 |
| Deuteranopia (no green cones) | #2C3852 | 0.011 |
| Tritanopia (no blue cones) | #2A3C41 | 0.043 |
| Achromatopsia (no color) | #393939 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333753
#333753
oklch(34.6% 0.049 277.3)
- #413A1A
#413A1A
oklch(34.8% 0.049 97.3)
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 #333753, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.033
- Gunmetal #293241 ΔE 0.038
- Onyx #343A40 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Midnight Green #073B4C ΔE 0.051
Use #333753 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.