#2A48A1
Closest named color: Cobalt (#1E488F). oklch(43.3% 0.149 266.2), rgb(42, 72, 161).
Aa
White text reads best on this color (8.26:1).
About this color
#2A48A1 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.149 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.032 away. White text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #2A48A1 |
| RGB | rgb(42, 72, 161) |
| HSL | hsl(225, 59%, 40%) |
| OKLCH | oklch(43.3% 0.149 266.2) |
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 #2A48A1 | 8.26:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2A48A1 | 2.54:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #2A48A1 text on white | 8.26:1 | AAA | Lc 88.1 | Fine for body text |
| #2A48A1 text on black | 2.54:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0FA
oklch(80.9% 0.087 265.8)
-
Step 400
400
#789DF7
oklch(70.8% 0.139 266)
-
Step 500
500
#5781F4
oklch(63.1% 0.178 266.3)
-
Step 600
600
#3E67E2
oklch(55.5% 0.193 266.2)
-
Step 700
700
#3155C5
oklch(49.2% 0.18 266.2)
-
Step 800
800 (this color)
#2A48A1
oklch(43.3% 0.149 266.2)
-
Step 900
900
#243C7E
oklch(37.6% 0.116 266)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#2A48A1 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) | #0054A4 | 0.035 |
| Deuteranopia (no green cones) | #00499F | 0.026 |
| Tritanopia (no blue cones) | #005E6D | 0.119 |
| Achromatopsia (no color) | #4E4E4E | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A48A1
#2A48A1
oklch(43.3% 0.149 266.2)
- #664C00
#664C00
oklch(43.2% 0.089 85.9)
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 #2A48A1, closest first.
No curated palette has a color within ΔE 0.04 of #2A48A1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.032
- Blueberry #464196 ΔE 0.041
- Sapphire #2138AB ΔE 0.044
- Dusk Blue #26538D ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.056
- Light Navy #155084 ΔE 0.058
- Blue Blue #2242C7 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
Use #2A48A1 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.