#2B4FAE
Closest named color: Blue Blue (#2242C7). oklch(45.8% 0.158 265), rgb(43, 79, 174).
Aa
White text reads best on this color (7.41:1).
About this color
#2B4FAE is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.158 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.051 away. White text reads best on it, at 7.41:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #2B4FAE |
| RGB | rgb(43, 79, 174) |
| HSL | hsl(224, 60%, 43%) |
| OKLCH | oklch(45.8% 0.158 265) |
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 #2B4FAE | 7.41:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #2B4FAE | 2.83:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #2B4FAE text on white | 7.41:1 | AAA | Lc 85.3 | Fine for body text |
| #2B4FAE text on black | 2.83:1 | Fails | Lc -16.7 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
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
#A4C0FD
oklch(80.9% 0.092 265.3)
-
Step 400
400
#739DFC
oklch(70.7% 0.147 264.9)
-
Step 500
500
#5081FA
oklch(63.2% 0.188 264.9)
-
Step 600
600
#3666E9
oklch(55.6% 0.205 265)
-
Step 700
700
#2A54CA
oklch(49.1% 0.189 265.1)
-
Step 800
800 (this color)
#2B4FAE
oklch(45.8% 0.158 265)
-
Step 900
900
#213C82
oklch(37.8% 0.123 265.1)
-
Step 950
950
#13244C
oklch(27.1% 0.077 264.5)
#2B4FAE 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) | #005CB1 | 0.036 |
| Deuteranopia (no green cones) | #0050AC | 0.024 |
| Tritanopia (no blue cones) | #006676 | 0.125 |
| Achromatopsia (no color) | #555555 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4FAE
#2B4FAE
oklch(45.8% 0.158 265)
- #6F5300
#6F5300
oklch(45.9% 0.094 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 #2B4FAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.051
- Cobalt #1E488F ΔE 0.055
- Dusk Blue #26538D ΔE 0.057
- Blueberry #464196 ΔE 0.057
- Sapphire #2138AB ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.068
- Twilight #4E518B ΔE 0.071
Use #2B4FAE 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.