#2A45B2
Closest named color: Blue Blue (#2242C7). oklch(44.1% 0.176 267.7), rgb(42, 69, 178).
Aa
White text reads best on this color (8.10:1).
About this color
#2A45B2 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.176 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.035 away. White text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #2A45B2 |
| RGB | rgb(42, 69, 178) |
| HSL | hsl(228, 62%, 43%) |
| OKLCH | oklch(44.1% 0.176 267.7) |
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 #2A45B2 | 8.10:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #2A45B2 | 2.59:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #2A45B2 text on white | 8.10:1 | AAA | Lc 87.4 | Fine for body text |
| #2A45B2 text on black | 2.59:1 | Fails | Lc -14.7 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#3B5FF6
oklch(55.5% 0.229 267.7)
-
Step 700
700
#2F4DD6
oklch(49.1% 0.212 267.7)
-
Step 800
800 (this color)
#2A45B2
oklch(44.1% 0.176 267.7)
-
Step 900
900
#233889
oklch(37.6% 0.137 268)
-
Step 950
950
#142250
oklch(27% 0.086 267.5)
#2A45B2 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) | #0056B6 | 0.043 |
| Deuteranopia (no green cones) | #004AB0 | 0.025 |
| Tritanopia (no blue cones) | #006175 | 0.138 |
| Achromatopsia (no color) | #505050 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A45B2
#2A45B2
oklch(44.1% 0.176 267.7)
- #684F00
#684F00
oklch(44.2% 0.09 87.5)
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 #2A45B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.035
- Sapphire #2138AB ΔE 0.035
- Majorelle Blue #3F37C9 ΔE 0.049
- Blueberry #464196 ΔE 0.057
- Cobalt #1E488F ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
- Blurple #5539CC ΔE 0.072
- Dusk Blue #26538D ΔE 0.074
Use #2A45B2 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.