#2B445B
Closest named color: Dark Grey Blue (#29465B). oklch(37.7% 0.05 247.3), rgb(43, 68, 91).
Aa
White text reads best on this color (10.09:1).
About this color
#2B445B is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.050 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.007 away. White text reads best on it, at 10.09:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #2B445B |
| RGB | rgb(43, 68, 91) |
| HSL | hsl(209, 36%, 26%) |
| OKLCH | oklch(37.7% 0.05 247.3) |
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 #2B445B | 10.09:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #2B445B | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2B445B text on white | 10.09:1 | AAA | Lc 93.4 | Preferred for body text |
| #2B445B text on black | 2.08:1 | Fails | Lc -9.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D8
oklch(80.8% 0.038 248.3)
-
Step 400
400
#83A5C5
oklch(70.8% 0.06 247.1)
-
Step 500
500
#638EB6
oklch(63.1% 0.077 247.3)
-
Step 600
600
#4978A2
oklch(55.7% 0.083 246.9)
-
Step 700
700
#3A648B
oklch(49% 0.079 248)
-
Step 800
800
#305271
oklch(42.7% 0.065 247.4)
-
Step 900
900 (this color)
#2B445B
oklch(37.7% 0.05 247.3)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#2B445B 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) | #3B445C | 0.022 |
| Deuteranopia (no green cones) | #34405B | 0.016 |
| Tritanopia (no blue cones) | #14494C | 0.042 |
| Achromatopsia (no color) | #424242 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B445B
#2B445B
oklch(37.7% 0.05 247.3)
- #543C23
#543C23
oklch(37.7% 0.051 66.4)
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 #2B445B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.007
- Charcoal #264653 ΔE 0.018
- Dark Blue Grey #1F3B4D ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.048
- Onyx #343A40 ΔE 0.049
- Dark Teal #014D4E ΔE 0.051
- Midnight Green #073B4C ΔE 0.053
Use #2B445B 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.