#33576B
Closest named color: YInMn Blue (#415A77). oklch(43.8% 0.053 234.1), rgb(51, 87, 107).
Aa
White text reads best on this color (7.73:1).
About this color
#33576B is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.053 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.028 away. White text reads best on it, at 7.73:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #33576B |
| RGB | rgb(51, 87, 107) |
| HSL | hsl(201, 35%, 31%) |
| OKLCH | oklch(43.8% 0.053 234.1) |
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 #33576B | 7.73:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #33576B | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #33576B text on white | 7.73:1 | AAA | Lc 86.8 | Fine for body text |
| #33576B text on black | 2.71:1 | Fails | Lc -15.3 | Dividers and decoration only |
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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AEC4D2
oklch(80.8% 0.031 235.7)
-
Step 400
400
#83A6BB
oklch(70.6% 0.049 234.7)
-
Step 500
500
#6290AA
oklch(63% 0.063 233.9)
-
Step 600
600
#487A96
oklch(55.6% 0.069 234.5)
-
Step 700
700
#396780
oklch(49.2% 0.065 234)
-
Step 800
800 (this color)
#33576B
oklch(43.8% 0.053 234.1)
-
Step 900
900
#2B4554
oklch(37.6% 0.041 234.7)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#33576B 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) | #4E566C | 0.035 |
| Deuteranopia (no green cones) | #46506B | 0.031 |
| Tritanopia (no blue cones) | #165C5E | 0.039 |
| Achromatopsia (no color) | #535353 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33576B
#33576B
oklch(43.8% 0.053 234.1)
- #694A36
#694A36
oklch(43.8% 0.053 53.7)
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 #33576B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.028
- Petrol #005F6A ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.047
- Deep Teal #00555A ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dusty Grape #545775 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
- Dusk #4E5481 ΔE 0.055
Use #33576B 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.