#2F3447
Closest named color: Gunmetal (#293241). oklch(32.9% 0.034 273), rgb(47, 52, 71).
Aa
White text reads best on this color (12.33:1).
About this color
#2F3447 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.034 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.016 away. White text reads best on it, at 12.33:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #2F3447 |
| RGB | rgb(47, 52, 71) |
| HSL | hsl(228, 20%, 23%) |
| OKLCH | oklch(32.9% 0.034 273) |
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 #2F3447 | 12.33:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #2F3447 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #2F3447 text on white | 12.33:1 | AAA | Lc 98.1 | Preferred for body text |
| #2F3447 text on black | 1.70:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D6D9E3
oklch(88.6% 0.014 272.7)
-
Step 300
300
#BBC0D2
oklch(80.9% 0.026 273.4)
-
Step 400
400
#989FBB
oklch(70.6% 0.042 274.2)
-
Step 500
500
#7F88AA
oklch(63.2% 0.052 273.3)
-
Step 600
600
#687196
oklch(55.5% 0.059 273.8)
-
Step 700
700
#565F7F
oklch(49.1% 0.053 272.2)
-
Step 800
800
#474E68
oklch(42.8% 0.044 272.7)
-
Step 900
900 (this color)
#2F3447
oklch(32.9% 0.034 273)
-
Step 950
950
#232631
oklch(27% 0.021 273)
#2F3447 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) | #2E3648 | 0.006 |
| Deuteranopia (no green cones) | #2C3447 | 0.005 |
| Tritanopia (no blue cones) | #29383B | 0.031 |
| Achromatopsia (no color) | #353535 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3447
#2F3447
oklch(32.9% 0.034 273)
- #3B3520
#3B3520
oklch(32.9% 0.035 94)
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 #2F3447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.016
- Space Cadet #2B2D42 ΔE 0.024
- Onyx #343A40 ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.036
- Midnight Green #073B4C ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.053
- Charcoal #264653 ΔE 0.057
Use #2F3447 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.