#2F4050
Closest named color: Charcoal (#264653). oklch(36.4% 0.035 247.3), rgb(47, 64, 80).
Aa
White text reads best on this color (10.65:1).
About this color
#2F4050 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.035 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.020 away. White text reads best on it, at 10.65:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.97:1 |
| White text | 10.65:1 |
Values
| HEX | #2F4050 |
| RGB | rgb(47, 64, 80) |
| HSL | hsl(209, 26%, 25%) |
| OKLCH | oklch(36.4% 0.035 247.3) |
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 #2F4050 | 10.65:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #2F4050 | 1.97:1 | Fails | Lc 9.2 | Not readable |
| #2F4050 text on white | 10.65:1 | AAA | Lc 94.7 | Preferred for body text |
| #2F4050 text on black | 1.97:1 | Fails | Lc -7.9 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B4C3D1
oklch(81% 0.026 246.3)
-
Step 400
400
#8CA4BA
oklch(70.8% 0.042 246.1)
-
Step 500
500
#6F8DA9
oklch(63.1% 0.054 246.9)
-
Step 600
600
#577794
oklch(55.6% 0.058 246.4)
-
Step 700
700
#47647F
oklch(49.2% 0.055 247.2)
-
Step 800
800
#3B5167
oklch(42.6% 0.046 248.9)
-
Step 900
900 (this color)
#2F4050
oklch(36.4% 0.035 247.3)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#2F4050 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) | #3A4051 | 0.017 |
| Deuteranopia (no green cones) | #363D50 | 0.013 |
| Tritanopia (no blue cones) | #244445 | 0.031 |
| Achromatopsia (no color) | #3E3E3E | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4050
#2F4050
oklch(36.4% 0.035 247.3)
- #4B3B2A
#4B3B2A
oklch(36.5% 0.035 68)
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 #2F4050, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.020
- Dark Grey Blue #29465B ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.028
- Onyx #343A40 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.031
- Midnight Green #073B4C ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.049
- Gunmetal #293241 ΔE 0.049
Use #2F4050 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.