#2F4C69
Closest named color: Dark Grey Blue (#29465B). oklch(40.7% 0.06 249.5), rgb(47, 76, 105).
Aa
White text reads best on this color (8.90:1).
About this color
#2F4C69 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.060 and its hue 250°. 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 8.90:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #2F4C69 |
| RGB | rgb(47, 76, 105) |
| HSL | hsl(210, 38%, 30%) |
| OKLCH | oklch(40.7% 0.06 249.5) |
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 #2F4C69 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #2F4C69 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #2F4C69 text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #2F4C69 text on black | 2.35:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B0C3D7
oklch(80.9% 0.035 249.6)
-
Step 400
400
#86A4C3
oklch(70.7% 0.056 249.5)
-
Step 500
500
#678DB4
oklch(63% 0.073 249.7)
-
Step 600
600
#4E77A0
oklch(55.6% 0.079 249.4)
-
Step 700
700
#3F6488
oklch(49.1% 0.072 248.8)
-
Step 800
800 (this color)
#2F4C69
oklch(40.7% 0.06 249.5)
-
Step 900
900
#2E445A
oklch(37.8% 0.047 249.2)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#2F4C69 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) | #404D6A | 0.023 |
| Deuteranopia (no green cones) | #394768 | 0.018 |
| Tritanopia (no blue cones) | #0F5356 | 0.052 |
| Achromatopsia (no color) | #4A4A4A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4C69
#2F4C69
oklch(40.7% 0.06 249.5)
- #5F4323
#5F4323
oklch(40.7% 0.061 68.4)
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 #2F4C69, 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 0.041
- Light Navy #155084 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- YInMn Blue #415A77 ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Twilight Blue #0A437A ΔE 0.055
Use #2F4C69 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.