#2148A2
Closest named color: Cobalt (#1E488F). oklch(43% 0.153 263.6), rgb(33, 72, 162).
Aa
White text reads best on this color (8.35:1).
About this color
#2148A2 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.153 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.032 away. White text reads best on it, at 8.35:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #2148A2 |
| RGB | rgb(33, 72, 162) |
| HSL | hsl(222, 66%, 38%) |
| OKLCH | oklch(43% 0.153 263.6) |
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 #2148A2 | 8.35:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2148A2 | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2148A2 text on white | 8.35:1 | AAA | Lc 88.3 | Fine for body text |
| #2148A2 text on black | 2.51:1 | Fails | Lc -13.9 | Not readable |
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
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A3C1FB
oklch(81% 0.089 263.3)
-
Step 400
400
#729EF9
oklch(70.7% 0.142 263.6)
-
Step 500
500
#4E82F6
oklch(63% 0.182 263.8)
-
Step 600
600
#3268E5
oklch(55.5% 0.199 263.6)
-
Step 700
700
#2656C7
oklch(49.1% 0.184 263.6)
-
Step 800
800 (this color)
#2148A2
oklch(43% 0.153 263.6)
-
Step 900
900
#1F3D80
oklch(37.8% 0.119 263.6)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#2148A2 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) | #0054A5 | 0.032 |
| Deuteranopia (no green cones) | #0048A0 | 0.018 |
| Tritanopia (no blue cones) | #005E6E | 0.118 |
| Achromatopsia (no color) | #4E4E4E | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2148A2
#2148A2
oklch(43% 0.153 263.6)
- #674B00
#674B00
oklch(43.1% 0.089 83.9)
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 #2148A2, closest first.
No curated palette has a color within ΔE 0.04 of #2148A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.032
- Sapphire #2138AB ΔE 0.041
- Blueberry #464196 ΔE 0.049
- Dusk Blue #26538D ΔE 0.049
- Light Navy #155084 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.068
Use #2148A2 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.