#33455D
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.047 255.8), rgb(51, 69, 93).
Aa
White text reads best on this color (9.76:1).
About this color
#33455D is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.047 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.014 away. White text reads best on it, at 9.76:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.76:1 |
Values
| HEX | #33455D |
| RGB | rgb(51, 69, 93) |
| HSL | hsl(214, 29%, 28%) |
| OKLCH | oklch(38.6% 0.047 255.8) |
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 #33455D | 9.76:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #33455D | 2.15:1 | Fails | Lc 11.3 | Not readable |
| #33455D text on white | 9.76:1 | AAA | Lc 92.6 | Preferred for body text |
| #33455D text on black | 2.15:1 | Fails | Lc -9.8 | 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
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B2C2D8
oklch(80.9% 0.036 256.4)
-
Step 400
400
#8AA3C4
oklch(70.8% 0.056 255.5)
-
Step 500
500
#6C8CB5
oklch(63.2% 0.072 254.9)
-
Step 600
600
#5475A1
oklch(55.6% 0.079 255.9)
-
Step 700
700
#44628A
oklch(49% 0.074 255.9)
-
Step 800
800
#385070
oklch(42.6% 0.061 255.9)
-
Step 900
900 (this color)
#33455D
oklch(38.6% 0.047 255.8)
-
Step 950
950
#1D2735
oklch(27% 0.03 256.9)
#33455D 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) | #3C465E | 0.014 |
| Deuteranopia (no green cones) | #37425C | 0.010 |
| Tritanopia (no blue cones) | #244A4D | 0.041 |
| Achromatopsia (no color) | #444444 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33455D
#33455D
oklch(38.6% 0.047 255.8)
- #534026
#534026
oklch(38.5% 0.048 74.3)
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 #33455D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.014
- Charcoal #264653 ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.049
- Onyx #343A40 ΔE 0.053
- Dark Teal #014D4E ΔE 0.058
- Deep Teal #00555A ΔE 0.061
Use #33455D 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.