#2F4569
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.068 259.9), rgb(47, 69, 105).
Aa
White text reads best on this color (9.65:1).
About this color
#2F4569 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.068 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.65:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #2F4569 |
| RGB | rgb(47, 69, 105) |
| HSL | hsl(217, 38%, 30%) |
| OKLCH | oklch(39% 0.068 259.9) |
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 #2F4569 | 9.65:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #2F4569 | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #2F4569 text on white | 9.65:1 | AAA | Lc 92.3 | Preferred for body text |
| #2F4569 text on black | 2.17:1 | Fails | Lc -10.2 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#AEC2E2
oklch(81% 0.05 259.8)
-
Step 400
400
#83A2D4
oklch(70.8% 0.081 259.8)
-
Step 500
500
#648AC8
oklch(63.2% 0.103 259.9)
-
Step 600
600
#4B73B5
oklch(55.7% 0.113 260)
-
Step 700
700
#3C609C
oklch(49.1% 0.105 260.1)
-
Step 800
800
#324F7E
oklch(42.8% 0.086 259.7)
-
Step 900
900 (this color)
#2F4569
oklch(39% 0.068 259.9)
-
Step 950
950
#1A273B
oklch(27.1% 0.042 258.8)
#2F4569 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) | #37486B | 0.015 |
| Deuteranopia (no green cones) | #304268 | 0.009 |
| Tritanopia (no blue cones) | #124D52 | 0.060 |
| Achromatopsia (no color) | #454545 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4569
#2F4569
oklch(39% 0.068 259.9)
- #584014
#584014
oklch(38.9% 0.068 79.2)
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 #2F4569, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.043
- Light Navy #155084 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.059
- Marine Blue #01386A ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.062
Use #2F4569 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.