#2A4268
Closest named color: Dark Grey Blue (#29465B). oklch(37.9% 0.072 259.3), rgb(42, 66, 104).
Aa
White text reads best on this color (10.10:1).
About this color
#2A4268 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.072 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.029 away. White text reads best on it, at 10.10:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.10:1 |
Values
| HEX | #2A4268 |
| RGB | rgb(42, 66, 104) |
| HSL | hsl(217, 42%, 29%) |
| OKLCH | oklch(37.9% 0.072 259.3) |
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 #2A4268 | 10.10:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #2A4268 | 2.07:1 | Fails | Lc 10.6 | Not readable |
| #2A4268 text on white | 10.10:1 | AAA | Lc 93.3 | Preferred for body text |
| #2A4268 text on black | 2.07:1 | Fails | Lc -9.2 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ACC2E4
oklch(80.9% 0.054 259)
-
Step 400
400
#80A2D7
oklch(70.7% 0.087 259.1)
-
Step 500
500
#608ACC
oklch(63.1% 0.11 259.1)
-
Step 600
600
#4773B9
oklch(55.7% 0.12 259.3)
-
Step 700
700
#38609F
oklch(49.1% 0.111 259.1)
-
Step 800
800
#2F4F81
oklch(42.8% 0.092 259)
-
Step 900
900 (this color)
#2A4268
oklch(37.9% 0.072 259.3)
-
Step 950
950
#19273D
oklch(27.2% 0.046 259.2)
#2A4268 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) | #33456A | 0.016 |
| Deuteranopia (no green cones) | #2B3F67 | 0.009 |
| Tritanopia (no blue cones) | #004A50 | 0.063 |
| Achromatopsia (no color) | #424242 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4268
#2A4268
oklch(37.9% 0.072 259.3)
- #563D0B
#563D0B
oklch(37.9% 0.072 79.7)
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 #2A4268, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.029
- Twilight Blue #0A437A ΔE 0.038
- Charcoal #264653 ΔE 0.043
- Marine Blue #01386A ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.052
- Light Navy #155084 ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.063
Use #2A4268 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.