#2A4A6B
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.068 250.5), rgb(42, 74, 107).
Aa
White text reads best on this color (9.16:1).
About this color
#2A4A6B is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.068 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.16:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #2A4A6B |
| RGB | rgb(42, 74, 107) |
| HSL | hsl(210, 44%, 29%) |
| OKLCH | oklch(40% 0.068 250.5) |
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 #2A4A6B | 9.16:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #2A4A6B | 2.29:1 | Fails | Lc 13.0 | Not readable |
| #2A4A6B text on white | 9.16:1 | AAA | Lc 91.0 | Preferred for body text |
| #2A4A6B text on black | 2.29:1 | Fails | Lc -11.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#A9C4E1
oklch(81% 0.051 250.3)
-
Step 400
400
#7AA5D2
oklch(70.8% 0.081 250.1)
-
Step 500
500
#578DC6
oklch(63% 0.104 251)
-
Step 600
600
#3A77B3
oklch(55.7% 0.113 250.2)
-
Step 700
700
#2C639A
oklch(49% 0.106 250.9)
-
Step 800
800
#26517D
oklch(42.6% 0.088 251.1)
-
Step 900
900 (this color)
#2A4A6B
oklch(40% 0.068 250.5)
-
Step 950
950
#16283B
oklch(27.1% 0.043 250.9)
#2A4A6B 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) | #3C4B6C | 0.023 |
| Deuteranopia (no green cones) | #34456A | 0.018 |
| Tritanopia (no blue cones) | #005256 | 0.057 |
| Achromatopsia (no color) | #484848 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4A6B
#2A4A6B
oklch(40% 0.068 250.5)
- #5F411A
#5F411A
oklch(40.1% 0.068 70.7)
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 #2A4A6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.042
- Light Navy #155084 ΔE 0.043
- Twilight Blue #0A437A ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.055
- Deep Teal #00555A ΔE 0.057
- Dusk Blue #26538D ΔE 0.058
Use #2A4A6B 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.