#2F3A48
Closest named color: Onyx (#343A40). oklch(34.4% 0.029 254.6), rgb(47, 58, 72).
Aa
White text reads best on this color (11.54:1).
About this color
#2F3A48 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.016 away. White text reads best on it, at 11.54:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.81:1 |
| White text | 11.54:1 |
Values
| HEX | #2F3A48 |
| RGB | rgb(47, 58, 72) |
| HSL | hsl(214, 21%, 23%) |
| OKLCH | oklch(34.4% 0.029 254.6) |
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 #2F3A48 | 11.54:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #2F3A48 | 1.81:1 | Fails | Lc 7.3 | Not readable |
| #2F3A48 text on white | 11.54:1 | AAA | Lc 96.6 | Preferred for body text |
| #2F3A48 text on black | 1.81:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE1
oklch(88.6% 0.012 252.1)
-
Step 300
300
#B7C2CF
oklch(81% 0.022 252.5)
-
Step 400
400
#92A2B6
oklch(70.6% 0.034 254.1)
-
Step 500
500
#788BA4
oklch(63.1% 0.044 255.4)
-
Step 600
600
#60758F
oklch(55.5% 0.048 254)
-
Step 700
700
#50627A
oklch(49.1% 0.045 255.7)
-
Step 800
800
#415063
oklch(42.6% 0.037 254.5)
-
Step 900
900 (this color)
#2F3A48
oklch(34.4% 0.029 254.6)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#2F3A48 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) | #353A49 | 0.010 |
| Deuteranopia (no green cones) | #323848 | 0.008 |
| Tritanopia (no blue cones) | #283D3F | 0.024 |
| Achromatopsia (no color) | #393939 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3A48
#2F3A48
oklch(34.4% 0.029 254.6)
- #423728
#423728
oklch(34.4% 0.029 75.2)
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 #2F3A48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.021
- Gunmetal #293241 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.036
- Charcoal #264653 ΔE 0.038
- Midnight Green #073B4C ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.043
Use #2F3A48 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.