#2A3E54
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.7% 0.046 251.5), rgb(42, 62, 84).
Aa
White text reads best on this color (10.96:1).
About this color
#2A3E54 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.046 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.021 away. White text reads best on it, at 10.96:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.91:1 |
| White text | 10.96:1 |
Values
| HEX | #2A3E54 |
| RGB | rgb(42, 62, 84) |
| HSL | hsl(211, 33%, 25%) |
| OKLCH | oklch(35.7% 0.046 251.5) |
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 #2A3E54 | 10.96:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #2A3E54 | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #2A3E54 text on white | 10.96:1 | AAA | Lc 95.3 | Preferred for body text |
| #2A3E54 text on black | 1.91:1 | Fails | Lc -7.3 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D7
oklch(81% 0.035 251)
-
Step 400
400
#88A3C3
oklch(70.6% 0.056 252.9)
-
Step 500
500
#6A8DB3
oklch(63.2% 0.07 251)
-
Step 600
600
#51769F
oklch(55.5% 0.077 251.8)
-
Step 700
700
#416388
oklch(49% 0.072 251.4)
-
Step 800
800
#36516F
oklch(42.7% 0.06 251.8)
-
Step 900
900 (this color)
#2A3E54
oklch(35.7% 0.046 251.5)
-
Step 950
950
#1C2734
oklch(26.9% 0.029 253)
#2A3E54 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) | #353F55 | 0.016 |
| Deuteranopia (no green cones) | #303B54 | 0.012 |
| Tritanopia (no blue cones) | #194345 | 0.041 |
| Achromatopsia (no color) | #3C3C3C | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3E54
#2A3E54
oklch(35.7% 0.046 251.5)
- #4C3820
#4C3820
oklch(35.7% 0.047 70.5)
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 #2A3E54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.021
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal #264653 ΔE 0.027
- Onyx #343A40 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.037
- Midnight Green #073B4C ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.043
- Gunmetal #293241 ΔE 0.045
Use #2A3E54 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.