#2F4166
Closest named color: Dark Grey Blue (#29465B). oklch(37.8% 0.068 263.7), rgb(47, 65, 102).
Aa
White text reads best on this color (10.15:1).
About this color
#2F4166 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.068 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.029 away. White text reads best on it, at 10.15:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.06:1 |
| White text | 10.15:1 |
Values
| HEX | #2F4166 |
| RGB | rgb(47, 65, 102) |
| HSL | hsl(220, 37%, 29%) |
| OKLCH | oklch(37.8% 0.068 263.7) |
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 #2F4166 | 10.15:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #2F4166 | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #2F4166 text on white | 10.15:1 | AAA | Lc 93.5 | Preferred for body text |
| #2F4166 text on black | 2.06:1 | Fails | Lc -9.0 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B0C1E2
oklch(80.9% 0.05 263.7)
-
Step 400
400
#87A0D4
oklch(70.6% 0.082 264.5)
-
Step 500
500
#6988C9
oklch(63.1% 0.105 264.2)
-
Step 600
600
#5071B5
oklch(55.5% 0.113 263.5)
-
Step 700
700
#415F9C
oklch(49.2% 0.104 263.3)
-
Step 800
800
#364D7F
oklch(42.6% 0.088 264.3)
-
Step 900
900 (this color)
#2F4166
oklch(37.8% 0.068 263.7)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#2F4166 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) | #334468 | 0.011 |
| Deuteranopia (no green cones) | #2C3F65 | 0.008 |
| Tritanopia (no blue cones) | #16494E | 0.061 |
| Achromatopsia (no color) | #414141 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4166
#2F4166
oklch(37.8% 0.068 263.7)
- #533E10
#533E10
oklch(37.8% 0.068 83.1)
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 #2F4166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.029
- Charcoal #264653 ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.051
- Marine Blue #01386A ΔE 0.054
- Light Navy #155084 ΔE 0.061
- Onyx #343A40 ΔE 0.064
Use #2F4166 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.