#2F4860
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.051 248.3), rgb(47, 72, 96).
Aa
White text reads best on this color (9.47:1).
About this color
#2F4860 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.051 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.013 away. White text reads best on it, at 9.47:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #2F4860 |
| RGB | rgb(47, 72, 96) |
| HSL | hsl(209, 34%, 28%) |
| OKLCH | oklch(39.2% 0.051 248.3) |
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 #2F4860 | 9.47:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #2F4860 | 2.21:1 | Fails | Lc 12.1 | Not readable |
| #2F4860 text on white | 9.47:1 | AAA | Lc 91.8 | Preferred for body text |
| #2F4860 text on black | 2.21:1 | Fails | Lc -10.5 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#83A4C6
oklch(70.6% 0.062 249.5)
-
Step 500
500
#638EB7
oklch(63.2% 0.078 248)
-
Step 600
600
#4977A3
oklch(55.5% 0.086 248.6)
-
Step 700
700
#3A648C
oklch(49.1% 0.08 248.6)
-
Step 800
800
#305271
oklch(42.7% 0.065 247.4)
-
Step 900
900 (this color)
#2F4860
oklch(39.2% 0.051 248.3)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#2F4860 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) | #3E4961 | 0.021 |
| Deuteranopia (no green cones) | #384460 | 0.016 |
| Tritanopia (no blue cones) | #194E50 | 0.045 |
| Achromatopsia (no color) | #464646 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4860
#2F4860
oklch(39.2% 0.051 248.3)
- #584026
#584026
oklch(39.1% 0.052 67.6)
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 #2F4860, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.013
- Charcoal #264653 ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.051
- Dark Teal #014D4E ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Twilight Blue #0A437A ΔE 0.059
Use #2F4860 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.