#2F3D5D
Closest named color: Dark Grey Blue (#29465B). oklch(36.3% 0.059 265.6), rgb(47, 61, 93).
Aa
White text reads best on this color (10.78:1).
About this color
#2F3D5D is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.059 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 10.78:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #2F3D5D |
| RGB | rgb(47, 61, 93) |
| HSL | hsl(222, 33%, 27%) |
| OKLCH | oklch(36.3% 0.059 265.6) |
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 #2F3D5D | 10.78:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #2F3D5D | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #2F3D5D text on white | 10.78:1 | AAA | Lc 94.9 | Preferred for body text |
| #2F3D5D text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DE
oklch(81% 0.044 264.9)
-
Step 400
400
#8CA0CD
oklch(70.7% 0.07 266)
-
Step 500
500
#6F88C0
oklch(63% 0.09 265.5)
-
Step 600
600
#5871AD
oklch(55.6% 0.098 266.1)
-
Step 700
700
#485F94
oklch(49.1% 0.09 265.4)
-
Step 800
800
#3B4E78
oklch(42.8% 0.074 264.9)
-
Step 900
900 (this color)
#2F3D5D
oklch(36.3% 0.059 265.6)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#2F3D5D 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) | #31405E | 0.010 |
| Deuteranopia (no green cones) | #2C3C5C | 0.006 |
| Tritanopia (no blue cones) | #1D4448 | 0.054 |
| Achromatopsia (no color) | #3D3D3D | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3D5D
#2F3D5D
oklch(36.3% 0.059 265.6)
- #4C3B15
#4C3B15
oklch(36.2% 0.059 84.7)
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 #2F3D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.038
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.050
- Marine Blue #01386A ΔE 0.052
- Midnight Green #073B4C ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.056
Use #2F3D5D 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.