#2A4AA9
Closest named color: Cobalt (#1E488F). oklch(44.4% 0.157 266), rgb(42, 74, 169).
Aa
White text reads best on this color (7.92:1).
About this color
#2A4AA9 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.157 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.65:1 |
| White text | 7.92:1 |
Values
| HEX | #2A4AA9 |
| RGB | rgb(42, 74, 169) |
| HSL | hsl(225, 60%, 41%) |
| OKLCH | oklch(44.4% 0.157 266) |
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 #2A4AA9 | 7.92:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #2A4AA9 | 2.65:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #2A4AA9 text on white | 7.92:1 | AAA | Lc 87.0 | Fine for body text |
| #2A4AA9 text on black | 2.65:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A5C0FD
oklch(81% 0.092 265.9)
-
Step 400
400
#759CFC
oklch(70.6% 0.147 266)
-
Step 500
500
#5380FA
oklch(63.1% 0.189 265.9)
-
Step 600
600
#3A65E9
oklch(55.5% 0.205 266.1)
-
Step 700
700
#2D53CA
oklch(49% 0.19 265.9)
-
Step 800
800 (this color)
#2A4AA9
oklch(44.4% 0.157 266)
-
Step 900
900
#223B82
oklch(37.6% 0.124 266)
-
Step 950
950
#14234C
oklch(26.9% 0.078 266.1)
#2A4AA9 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) | #0057AC | 0.036 |
| Deuteranopia (no green cones) | #004CA7 | 0.024 |
| Tritanopia (no blue cones) | #006172 | 0.124 |
| Achromatopsia (no color) | #515151 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4AA9
#2A4AA9
oklch(44.4% 0.157 266)
- #6A4F00
#6A4F00
oklch(44.4% 0.091 85.8)
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 #2A4AA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Sapphire #2138AB ΔE 0.046
- Blueberry #464196 ΔE 0.048
- Blue Blue #2242C7 ΔE 0.052
- Dusk Blue #26538D ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.066
- Light Navy #155084 ΔE 0.067
Use #2A4AA9 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.