#2D4161
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.061 259.5), rgb(45, 65, 97).
Aa
White text reads best on this color (10.29:1).
About this color
#2D4161 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.061 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 10.29:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.04:1 |
| White text | 10.29:1 |
Values
| HEX | #2D4161 |
| RGB | rgb(45, 65, 97) |
| HSL | hsl(217, 37%, 28%) |
| OKLCH | oklch(37.4% 0.061 259.5) |
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 #2D4161 | 10.29:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #2D4161 | 2.04:1 | Fails | Lc 10.1 | Not readable |
| #2D4161 text on white | 10.29:1 | AAA | Lc 93.8 | Preferred for body text |
| #2D4161 text on black | 2.04:1 | Fails | Lc -8.7 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AFC2DF
oklch(80.9% 0.046 258.8)
-
Step 400
400
#86A2CF
oklch(70.8% 0.073 259.8)
-
Step 500
500
#678AC2
oklch(63% 0.094 259.5)
-
Step 600
600
#4F73AE
oklch(55.5% 0.101 259.9)
-
Step 700
700
#3F6196
oklch(49.2% 0.094 259)
-
Step 800
800
#344F7A
oklch(42.7% 0.079 259.4)
-
Step 900
900 (this color)
#2D4161
oklch(37.4% 0.061 259.5)
-
Step 950
950
#1B2739
oklch(27.1% 0.038 258.3)
#2D4161 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) | #354362 | 0.013 |
| Deuteranopia (no green cones) | #2F3E60 | 0.009 |
| Tritanopia (no blue cones) | #15484C | 0.055 |
| Achromatopsia (no color) | #404040 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4161
#2D4161
oklch(37.4% 0.061 259.5)
- #523D17
#523D17
oklch(37.5% 0.061 79.8)
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 #2D4161, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.049
- Marine Blue #01386A ΔE 0.054
- Onyx #343A40 ΔE 0.056
- Midnight Green #073B4C ΔE 0.057
Use #2D4161 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.