#2F4263
Closest named color: Dark Grey Blue (#29465B). oklch(37.9% 0.062 261), rgb(47, 66, 99).
Aa
White text reads best on this color (10.09:1).
About this color
#2F4263 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.062 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 10.09:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #2F4263 |
| RGB | rgb(47, 66, 99) |
| HSL | hsl(218, 36%, 29%) |
| OKLCH | oklch(37.9% 0.062 261) |
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 #2F4263 | 10.09:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #2F4263 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2F4263 text on white | 10.09:1 | AAA | Lc 93.4 | Preferred for body text |
| #2F4263 text on black | 2.08:1 | Fails | Lc -9.1 | 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
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B0C2DF
oklch(81% 0.046 259.9)
-
Step 400
400
#87A1CF
oklch(70.6% 0.074 261.7)
-
Step 500
500
#698AC3
oklch(63.2% 0.094 261)
-
Step 600
600
#5073B0
oklch(55.7% 0.104 261)
-
Step 700
700
#416097
oklch(49.1% 0.096 261.2)
-
Step 800
800
#364F7A
oklch(42.8% 0.078 260.7)
-
Step 900
900 (this color)
#2F4263
oklch(37.9% 0.062 261)
-
Step 950
950
#1B273A
oklch(27.1% 0.039 259.4)
#2F4263 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) | #354464 | 0.011 |
| Deuteranopia (no green cones) | #2F4062 | 0.006 |
| Tritanopia (no blue cones) | #18494E | 0.055 |
| Achromatopsia (no color) | #424242 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4263
#2F4263
oklch(37.9% 0.062 261)
- #533E17
#533E17
oklch(37.8% 0.062 80.3)
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 #2F4263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.048
- Twilight Blue #0A437A ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.052
- Marine Blue #01386A ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.058
- Onyx #343A40 ΔE 0.059
Use #2F4263 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.