#2647B5
Closest named color: Blue Blue (#2242C7). oklch(44.6% 0.178 266.2), rgb(38, 71, 181).
Aa
White text reads best on this color (7.92:1).
About this color
#2647B5 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.178 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.031 away. White text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.65:1 |
| White text | 7.92:1 |
Values
| HEX | #2647B5 |
| RGB | rgb(38, 71, 181) |
| HSL | hsl(226, 65%, 43%) |
| OKLCH | oklch(44.6% 0.178 266.2) |
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 #2647B5 | 7.92:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #2647B5 | 2.65:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #2647B5 text on white | 7.92:1 | AAA | Lc 86.8 | Fine for body text |
| #2647B5 text on black | 2.65:1 | Fails | Lc -15.2 | 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
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#3460F8
oklch(55.6% 0.232 266.2)
-
Step 700
700
#284ED8
oklch(49.2% 0.215 266.2)
-
Step 800
800 (this color)
#2647B5
oklch(44.6% 0.178 266.2)
-
Step 900
900
#1F398A
oklch(37.7% 0.139 266.2)
-
Step 950
950
#122251
oklch(27% 0.089 266.3)
#2647B5 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) | #0058B9 | 0.042 |
| Deuteranopia (no green cones) | #004BB3 | 0.021 |
| Tritanopia (no blue cones) | #006377 | 0.139 |
| Achromatopsia (no color) | #515151 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2647B5
#2647B5
oklch(44.6% 0.178 266.2)
- #6A5000
#6A5000
oklch(44.6% 0.091 86.9)
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 #2647B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.031
- Sapphire #2138AB ΔE 0.040
- Majorelle Blue #3F37C9 ΔE 0.050
- Cobalt #1E488F ΔE 0.063
- Blueberry #464196 ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
- Blurple #5539CC ΔE 0.073
- Dusk Blue #26538D ΔE 0.075
Use #2647B5 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.