#2B394F
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.2% 0.043 259.3), rgb(43, 57, 79).
Aa
White text reads best on this color (11.66:1).
About this color
#2B394F is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.043 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.017 away. White text reads best on it, at 11.66:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.80:1 |
| White text | 11.66:1 |
Values
| HEX | #2B394F |
| RGB | rgb(43, 57, 79) |
| HSL | hsl(217, 30%, 24%) |
| OKLCH | oklch(34.2% 0.043 259.3) |
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 #2B394F | 11.66:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #2B394F | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #2B394F text on white | 11.66:1 | AAA | Lc 96.8 | Preferred for body text |
| #2B394F text on black | 1.80:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B4C2D6
oklch(81% 0.032 257.2)
-
Step 400
400
#8EA2C1
oklch(70.8% 0.051 259.1)
-
Step 500
500
#728BB2
oklch(63.2% 0.066 259.2)
-
Step 600
600
#5A749E
oklch(55.6% 0.073 259.8)
-
Step 700
700
#4A6187
oklch(49% 0.067 260.2)
-
Step 800
800
#3D506D
oklch(42.8% 0.054 258.7)
-
Step 900
900 (this color)
#2B394F
oklch(34.2% 0.043 259.3)
-
Step 950
950
#1E2734
oklch(27% 0.028 257.5)
#2B394F 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) | #313A50 | 0.010 |
| Deuteranopia (no green cones) | #2D374F | 0.007 |
| Tritanopia (no blue cones) | #1E3E41 | 0.038 |
| Achromatopsia (no color) | #383838 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B394F
#2B394F
oklch(34.2% 0.043 259.3)
- #45361E
#45361E
oklch(34.3% 0.043 78.3)
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 #2B394F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.017
- Prussian Blue #1D3557 ΔE 0.029
- Gunmetal #293241 ΔE 0.030
- Onyx #343A40 ΔE 0.030
- Midnight Green #073B4C ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.040
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.042
Use #2B394F 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.