#2F416F
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.082 266.5), rgb(47, 65, 111).
Aa
White text reads best on this color (9.96:1).
About this color
#2F416F is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.082 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.035 away. White text reads best on it, at 9.96:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.10:1 |
| White text | 9.96:1 |
Values
| HEX | #2F416F |
| RGB | rgb(47, 65, 111) |
| HSL | hsl(223, 41%, 31%) |
| OKLCH | oklch(38.4% 0.082 266.5) |
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 #2F416F | 9.96:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2F416F | 2.10:1 | Fails | Lc 10.9 | Not readable |
| #2F416F text on white | 9.96:1 | AAA | Lc 93.0 | Preferred for body text |
| #2F416F text on black | 2.10:1 | Fails | Lc -9.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0E9
oklch(80.8% 0.061 266.4)
-
Step 400
400
#849FDF
oklch(70.7% 0.099 266.4)
-
Step 500
500
#6686D5
oklch(63.1% 0.125 266.2)
-
Step 600
600
#4E6EC3
oklch(55.6% 0.137 266.5)
-
Step 700
700
#3F5CA8
oklch(49.2% 0.126 266.2)
-
Step 800
800
#344B88
oklch(42.6% 0.105 266.5)
-
Step 900
900 (this color)
#2F416F
oklch(38.4% 0.082 266.5)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#2F416F 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) | #2E4671 | 0.015 |
| Deuteranopia (no green cones) | #26406E | 0.012 |
| Tritanopia (no blue cones) | #0B4B52 | 0.074 |
| Achromatopsia (no color) | #434343 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F416F
#2F416F
oklch(38.4% 0.082 266.5)
- #564000
#564000
oklch(38.5% 0.079 86.5)
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 #2F416F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.042
- Light Navy #155084 ΔE 0.052
- Marine Blue #01386A ΔE 0.053
- Cobalt #1E488F ΔE 0.055
- Charcoal #264653 ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.062
Use #2F416F 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.