#2F3D59
Closest named color: Dark Grey Blue (#29465B). oklch(36.1% 0.052 263.6), rgb(47, 61, 89).
Aa
White text reads best on this color (10.86:1).
About this color
#2F3D59 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.052 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 10.86:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #2F3D59 |
| RGB | rgb(47, 61, 89) |
| HSL | hsl(220, 31%, 27%) |
| OKLCH | oklch(36.1% 0.052 263.6) |
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 #2F3D59 | 10.86:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #2F3D59 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #2F3D59 text on white | 10.86:1 | AAA | Lc 95.1 | Preferred for body text |
| #2F3D59 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DB
oklch(80.9% 0.039 264.3)
-
Step 400
400
#8DA1C8
oklch(70.7% 0.062 263.6)
-
Step 500
500
#7089BB
oklch(63.1% 0.081 263.7)
-
Step 600
600
#5973A7
oklch(55.7% 0.087 263.5)
-
Step 700
700
#49608F
oklch(49.2% 0.081 263.8)
-
Step 800
800
#3C4E74
oklch(42.6% 0.068 264.4)
-
Step 900
900 (this color)
#2F3D59
oklch(36.1% 0.052 263.6)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#2F3D59 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) | #333F5A | 0.009 |
| Deuteranopia (no green cones) | #2E3B58 | 0.007 |
| Tritanopia (no blue cones) | #204347 | 0.047 |
| Achromatopsia (no color) | #3D3D3D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3D59
#2F3D59
oklch(36.1% 0.052 263.6)
- #4A3B1B
#4A3B1B
oklch(36.1% 0.052 84.5)
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 #2F3D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.031
- Charcoal #264653 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.037
- Onyx #343A40 ΔE 0.043
- Midnight Green #073B4C ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.049
- Gunmetal #293241 ΔE 0.051
Use #2F3D59 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.