#2B4ABA
Closest named color: Blue Blue (#2242C7). oklch(45.8% 0.18 267), rgb(43, 74, 186).
Aa
White text reads best on this color (7.52:1).
About this color
#2B4ABA is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.180 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.029 away. White text reads best on it, at 7.52:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #2B4ABA |
| RGB | rgb(43, 74, 186) |
| HSL | hsl(227, 62%, 45%) |
| OKLCH | oklch(45.8% 0.18 267) |
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 #2B4ABA | 7.52:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #2B4ABA | 2.79:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #2B4ABA text on white | 7.52:1 | AAA | Lc 85.5 | Fine for body text |
| #2B4ABA text on black | 2.79:1 | Fails | Lc -16.5 | 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
#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
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600
#375FF9
oklch(55.6% 0.233 266.9)
-
Step 700
700
#2B4CD9
oklch(49% 0.218 267.1)
-
Step 800
800 (this color)
#2B4ABA
oklch(45.8% 0.18 267)
-
Step 900
900
#20388B
oklch(37.7% 0.141 267)
-
Step 950
950
#132251
oklch(27% 0.088 267)
#2B4ABA 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) | #005BBE | 0.043 |
| Deuteranopia (no green cones) | #004EB8 | 0.024 |
| Tritanopia (no blue cones) | #00677B | 0.142 |
| Achromatopsia (no color) | #545454 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4ABA
#2B4ABA
oklch(45.8% 0.18 267)
- #6E5300
#6E5300
oklch(45.8% 0.094 86.8)
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 #2B4ABA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.029
- Majorelle Blue #3F37C9 ΔE 0.047
- Sapphire #2138AB ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Blurple #5539CC ΔE 0.067
- Blueberry #464196 ΔE 0.067
- Cobalt #1E488F ΔE 0.072
- Warm Blue #4B57DB ΔE 0.074
Use #2B4ABA 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.