#2148B7
Closest named color: Blue Blue (#2242C7). oklch(44.8% 0.181 264.9), rgb(33, 72, 183).
Aa
White text reads best on this color (7.84:1).
About this color
#2148B7 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.181 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.028 away. White text reads best on it, at 7.84:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.67:1 |
| White text | 7.84:1 |
Values
| HEX | #2148B7 |
| RGB | rgb(33, 72, 183) |
| HSL | hsl(224, 69%, 42%) |
| OKLCH | oklch(44.8% 0.181 264.9) |
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 #2148B7 | 7.84:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #2148B7 | 2.67:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #2148B7 text on white | 7.84:1 | AAA | Lc 86.6 | Fine for body text |
| #2148B7 text on black | 2.67:1 | Fails | Lc -15.5 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#719CFF
oklch(70.6% 0.153 265)
-
Step 500
500
#4D80FF
oklch(63.2% 0.197 264.8)
-
Step 600
600
#2C60FA
oklch(55.5% 0.236 265)
-
Step 700
700
#214EDA
oklch(49.1% 0.219 265)
-
Step 800
800 (this color)
#2148B7
oklch(44.8% 0.181 264.9)
-
Step 900
900
#1B398B
oklch(37.7% 0.141 265)
-
Step 950
950
#102251
oklch(26.9% 0.089 265.1)
#2148B7 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) | #0059BB | 0.042 |
| Deuteranopia (no green cones) | #004BB5 | 0.016 |
| Tritanopia (no blue cones) | #006578 | 0.142 |
| Achromatopsia (no color) | #525252 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2148B7
#2148B7
oklch(44.8% 0.181 264.9)
- #6C5000
#6C5000
oklch(44.9% 0.092 85.2)
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 #2148B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.028
- Sapphire #2138AB ΔE 0.042
- Majorelle Blue #3F37C9 ΔE 0.051
- Cobalt #1E488F ΔE 0.065
- Blueberry #464196 ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
- Blurple #5539CC ΔE 0.075
- Dusk Blue #26538D ΔE 0.077
Use #2148B7 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.