#2A405E
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.059 256.4), rgb(42, 64, 94).
Aa
White text reads best on this color (10.53:1).
About this color
#2A405E is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.059 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.021 away. White text reads best on it, at 10.53:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #2A405E |
| RGB | rgb(42, 64, 94) |
| HSL | hsl(215, 38%, 27%) |
| OKLCH | oklch(36.8% 0.059 256.4) |
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 #2A405E | 10.53:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #2A405E | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #2A405E text on white | 10.53:1 | AAA | Lc 94.4 | Preferred for body text |
| #2A405E text on black | 1.99:1 | Fails | Lc -8.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AFC2DE
oklch(80.9% 0.045 258)
-
Step 400
400
#84A3CD
oklch(70.8% 0.071 256.1)
-
Step 500
500
#658BC0
oklch(63% 0.091 256.8)
-
Step 600
600
#4C75AC
oklch(55.7% 0.098 256.1)
-
Step 700
700
#3D6294
oklch(49.2% 0.091 256.3)
-
Step 800
800
#325078
oklch(42.7% 0.076 256)
-
Step 900
900 (this color)
#2A405E
oklch(36.8% 0.059 256.4)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#2A405E 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) | #34425F | 0.016 |
| Deuteranopia (no green cones) | #2E3D5D | 0.010 |
| Tritanopia (no blue cones) | #10474B | 0.052 |
| Achromatopsia (no color) | #3F3F3F | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A405E
#2A405E
oklch(36.8% 0.059 256.4)
- #513B18
#513B18
oklch(36.9% 0.059 76.7)
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 #2A405E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.021
- Charcoal #264653 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.041
- Midnight Green #073B4C ΔE 0.050
- Onyx #343A40 ΔE 0.051
- Marine Blue #01386A ΔE 0.051
- Twilight Blue #0A437A ΔE 0.051
Use #2A405E 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.