#2D4261
Closest named color: Dark Grey Blue (#29465B). oklch(37.6% 0.06 258), rgb(45, 66, 97).
Aa
White text reads best on this color (10.17:1).
About this color
#2D4261 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.060 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 10.17:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #2D4261 |
| RGB | rgb(45, 66, 97) |
| HSL | hsl(216, 37%, 28%) |
| OKLCH | oklch(37.6% 0.06 258) |
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 #2D4261 | 10.17:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #2D4261 | 2.06:1 | Fails | Lc 10.4 | Not readable |
| #2D4261 text on white | 10.17:1 | AAA | Lc 93.5 | Preferred for body text |
| #2D4261 text on black | 2.06:1 | Fails | Lc -9.0 | 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
#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
#AFC2DE
oklch(80.9% 0.045 258)
-
Step 400
400
#85A2CE
oklch(70.7% 0.072 258.6)
-
Step 500
500
#668BC1
oklch(63.1% 0.092 257.7)
-
Step 600
600
#4D74AD
oklch(55.6% 0.1 257.8)
-
Step 700
700
#3E6195
oklch(49.1% 0.093 258.1)
-
Step 800
800
#344F79
oklch(42.6% 0.078 258.9)
-
Step 900
900 (this color)
#2D4261
oklch(37.6% 0.06 258)
-
Step 950
950
#1B2739
oklch(27.1% 0.038 258.3)
#2D4261 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) | #364462 | 0.015 |
| Deuteranopia (no green cones) | #303F60 | 0.009 |
| Tritanopia (no blue cones) | #15494D | 0.053 |
| Achromatopsia (no color) | #414141 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4261
#2D4261
oklch(37.6% 0.06 258)
- #533D19
#533D19
oklch(37.6% 0.06 77.4)
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 #2D4261, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.056
- Onyx #343A40 ΔE 0.056
- Marine Blue #01386A ΔE 0.056
Use #2D4261 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.