#2B445F
Closest named color: Dark Grey Blue (#29465B). oklch(37.9% 0.056 251.3), rgb(43, 68, 95).
Aa
White text reads best on this color (10.02:1).
About this color
#2B445F is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.056 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.011 away. White text reads best on it, at 10.02:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #2B445F |
| RGB | rgb(43, 68, 95) |
| HSL | hsl(211, 38%, 27%) |
| OKLCH | oklch(37.9% 0.056 251.3) |
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 #2B445F | 10.02:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #2B445F | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #2B445F text on white | 10.02:1 | AAA | Lc 93.2 | Preferred for body text |
| #2B445F text on black | 2.09:1 | Fails | Lc -9.3 | 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
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#82A4CA
oklch(70.7% 0.067 251.6)
-
Step 500
500
#628DBC
oklch(63.1% 0.086 251.4)
-
Step 600
600
#4876A8
oklch(55.5% 0.093 251.7)
-
Step 700
700
#396390
oklch(49% 0.087 251.5)
-
Step 800
800
#305175
oklch(42.7% 0.072 251.8)
-
Step 900
900 (this color)
#2B445F
oklch(37.9% 0.056 251.3)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#2B445F 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) | #394560 | 0.020 |
| Deuteranopia (no green cones) | #33405E | 0.015 |
| Tritanopia (no blue cones) | #114A4D | 0.049 |
| Achromatopsia (no color) | #424242 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B445F
#2B445F
oklch(37.9% 0.056 251.3)
- #553D1F
#553D1F
oklch(38% 0.056 70.9)
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 #2B445F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.011
- Charcoal #264653 ΔE 0.025
- Dark Blue Grey #1F3B4D ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.053
- Onyx #343A40 ΔE 0.054
Use #2B445F 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.