#2B3645
Closest named color: Gunmetal (#293241). oklch(32.9% 0.031 256.2), rgb(43, 54, 69).
Aa
White text reads best on this color (12.23:1).
About this color
#2B3645 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.031 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.014 away. White text reads best on it, at 12.23:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.71:1 |
| White text | 12.23:1 |
Values
| HEX | #2B3645 |
| RGB | rgb(43, 54, 69) |
| HSL | hsl(215, 23%, 22%) |
| OKLCH | oklch(32.9% 0.031 256.2) |
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 #2B3645 | 12.23:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #2B3645 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #2B3645 text on white | 12.23:1 | AAA | Lc 97.9 | Preferred for body text |
| #2B3645 text on black | 1.71:1 | 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
#D4DAE2
oklch(88.6% 0.013 255.5)
-
Step 300
300
#B7C2D0
oklch(81% 0.023 254.4)
-
Step 400
400
#92A2B8
oklch(70.7% 0.037 256.4)
-
Step 500
500
#778BA6
oklch(63.1% 0.047 256)
-
Step 600
600
#607591
oklch(55.6% 0.05 255.7)
-
Step 700
700
#4F627C
oklch(49.1% 0.048 256.3)
-
Step 800
800
#415065
oklch(42.7% 0.04 256.8)
-
Step 900
900 (this color)
#2B3645
oklch(32.9% 0.031 256.2)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#2B3645 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) | #313746 | 0.010 |
| Deuteranopia (no green cones) | #2E3445 | 0.008 |
| Tritanopia (no blue cones) | #23393B | 0.026 |
| Achromatopsia (no color) | #353535 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B3645
#2B3645
oklch(32.9% 0.031 256.2)
- #3E3323
#3E3323
oklch(32.8% 0.031 76.7)
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 #2B3645, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.014
- Dark Blue Grey #1F3B4D ΔE 0.022
- Onyx #343A40 ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.029
- Midnight Green #073B4C ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.049
- Charcoal #264653 ΔE 0.051
Use #2B3645 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.