#2A3949
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.8% 0.035 250.5), rgb(42, 57, 73).
Aa
White text reads best on this color (11.79:1).
About this color
#2A3949 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.035 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.015 away. White text reads best on it, at 11.79:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.77:1 |
| White text | 11.79:1 |
Values
| HEX | #2A3949 |
| RGB | rgb(42, 57, 73) |
| HSL | hsl(211, 27%, 23%) |
| OKLCH | oklch(33.8% 0.035 250.5) |
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 #2A3949 | 11.79:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #2A3949 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #2A3949 text on white | 11.79:1 | AAA | Lc 97.1 | Preferred for body text |
| #2A3949 text on black | 1.77:1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B5C2D1
oklch(80.9% 0.026 251.9)
-
Step 400
400
#8EA3BA
oklch(70.7% 0.041 250.8)
-
Step 500
500
#728CA9
oklch(63.1% 0.053 251.4)
-
Step 600
600
#5A7694
oklch(55.6% 0.057 250.6)
-
Step 700
700
#4A637E
oklch(49.1% 0.053 250.8)
-
Step 800
800
#3D5167
oklch(42.8% 0.044 251.3)
-
Step 900
900 (this color)
#2A3949
oklch(33.8% 0.035 250.5)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#2A3949 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) | #33394A | 0.014 |
| Deuteranopia (no green cones) | #2F3649 | 0.012 |
| Tritanopia (no blue cones) | #1F3D3E | 0.031 |
| Achromatopsia (no color) | #383838 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3949
#2A3949
oklch(33.8% 0.035 250.5)
- #433524
#433524
oklch(33.9% 0.034 71.7)
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 #2A3949, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.015
- Onyx #343A40 ΔE 0.022
- Gunmetal #293241 ΔE 0.024
- Midnight Green #073B4C ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.038
- Charcoal #264653 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.044
Use #2A3949 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.