#2F3C4E
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.2% 0.036 256.6), rgb(47, 60, 78).
Aa
White text reads best on this color (11.18:1).
About this color
#2F3C4E is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.036 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.022 away. White text reads best on it, at 11.18:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.87:1 |
| White text | 11.18:1 |
Values
| HEX | #2F3C4E |
| RGB | rgb(47, 60, 78) |
| HSL | hsl(215, 25%, 25%) |
| OKLCH | oklch(35.2% 0.036 256.6) |
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 #2F3C4E | 11.18:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #2F3C4E | 1.87:1 | Fails | Lc 8.1 | Not readable |
| #2F3C4E text on white | 11.18:1 | AAA | Lc 95.8 | Preferred for body text |
| #2F3C4E text on black | 1.87:1 | Fails | Lc 0.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B6C2D2
oklch(81% 0.026 255.6)
-
Step 400
400
#90A2BC
oklch(70.7% 0.043 257.5)
-
Step 500
500
#748BAB
oklch(63.1% 0.055 256.7)
-
Step 600
600
#5D7596
oklch(55.6% 0.059 256.5)
-
Step 700
700
#4C6280
oklch(49.1% 0.055 256.3)
-
Step 800
800
#3F5068
oklch(42.7% 0.045 257)
-
Step 900
900 (this color)
#2F3C4E
oklch(35.2% 0.036 256.6)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#2F3C4E 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) | #363D4F | 0.012 |
| Deuteranopia (no green cones) | #323A4E | 0.007 |
| Tritanopia (no blue cones) | #254042 | 0.032 |
| Achromatopsia (no color) | #3B3B3B | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3C4E
#2F3C4E
oklch(35.2% 0.036 256.6)
- #463926
#463926
oklch(35.3% 0.036 76.6)
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 #2F3C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.022
- Onyx #343A40 ΔE 0.024
- Charcoal #264653 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.037
- Gunmetal #293241 ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.040
- Midnight Green #073B4C ΔE 0.041
Use #2F3C4E 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.