#2F3D68
Closest named color: Dark Grey Blue (#29465B). oklch(37% 0.076 268.8), rgb(47, 61, 104).
Aa
White text reads best on this color (10.56:1).
About this color
#2F3D68 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.076 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.041 away. White text reads best on it, at 10.56:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.56:1 |
Values
| HEX | #2F3D68 |
| RGB | rgb(47, 61, 104) |
| HSL | hsl(225, 38%, 30%) |
| OKLCH | oklch(37% 0.076 268.8) |
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 #2F3D68 | 10.56:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #2F3D68 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #2F3D68 text on white | 10.56:1 | AAA | Lc 94.4 | Preferred for body text |
| #2F3D68 text on black | 1.98:1 | Fails | Lc -8.2 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B1C0E7
oklch(80.9% 0.058 268.6)
-
Step 400
400
#899EDA
oklch(70.6% 0.091 269.2)
-
Step 500
500
#6C85D0
oklch(63% 0.117 268.9)
-
Step 600
600
#556EBE
oklch(55.7% 0.128 268.9)
-
Step 700
700
#455BA3
oklch(49% 0.118 268.9)
-
Step 800
800
#394B84
oklch(42.7% 0.097 268.8)
-
Step 900
900 (this color)
#2F3D68
oklch(37% 0.076 268.8)
-
Step 950
950
#1D253E
oklch(27% 0.048 269.5)
#2F3D68 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) | #2C426A | 0.015 |
| Deuteranopia (no green cones) | #263C67 | 0.013 |
| Tritanopia (no blue cones) | #15464D | 0.068 |
| Achromatopsia (no color) | #3F3F3F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3D68
#2F3D68
oklch(37% 0.076 268.8)
- #503D00
#503D00
oklch(37% 0.076 88.8)
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 #2F3D68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.045
- Marine Blue #01386A ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.053
- Charcoal #264653 ΔE 0.053
- Midnight Green #073B4C ΔE 0.066
- Light Navy #155084 ΔE 0.067
Use #2F3D68 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.