#2751AA
Closest named color: Dusk Blue (#26538D). oklch(45.8% 0.151 262.9), rgb(39, 81, 170).
Aa
White text reads best on this color (7.38:1).
About this color
#2751AA is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.151 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.049 away. White text reads best on it, at 7.38:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #2751AA |
| RGB | rgb(39, 81, 170) |
| HSL | hsl(221, 63%, 41%) |
| OKLCH | oklch(45.8% 0.151 262.9) |
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 #2751AA | 7.38:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #2751AA | 2.84:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #2751AA text on white | 7.38:1 | AAA | Lc 85.2 | Fine for body text |
| #2751AA text on black | 2.84:1 | Fails | Lc -16.8 | 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
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A3C1FA
oklch(80.9% 0.087 263)
-
Step 400
400
#719EF8
oklch(70.6% 0.141 263.1)
-
Step 500
500
#4C83F5
oklch(63.1% 0.181 262.9)
-
Step 600
600
#3069E4
oklch(55.6% 0.197 262.9)
-
Step 700
700
#2457C6
oklch(49.2% 0.182 262.9)
-
Step 800
800 (this color)
#2751AA
oklch(45.8% 0.151 262.9)
-
Step 900
900
#1E3D7F
oklch(37.7% 0.118 263)
-
Step 950
950
#12244A
oklch(26.9% 0.075 263.2)
#2751AA 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) | #155CAD | 0.029 |
| Deuteranopia (no green cones) | #0050A8 | 0.021 |
| Tritanopia (no blue cones) | #006775 | 0.120 |
| Achromatopsia (no color) | #565656 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2751AA
#2751AA
oklch(45.8% 0.151 262.9)
- #715200
#715200
oklch(45.9% 0.094 83.2)
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 #2751AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.049
- Cobalt #1E488F ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.056
- Blueberry #464196 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.059
- Sapphire #2138AB ΔE 0.063
- Light Navy #155084 ΔE 0.065
- Light Navy Blue #2E5A88 ΔE 0.065
Use #2751AA 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.