#2149A4
Closest named color: Cobalt (#1E488F). oklch(43.4% 0.154 263.4), rgb(33, 73, 164).
Aa
White text reads best on this color (8.22:1).
About this color
#2149A4 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.154 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.035 away. White text reads best on it, at 8.22:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.55:1 |
| White text | 8.22:1 |
Values
| HEX | #2149A4 |
| RGB | rgb(33, 73, 164) |
| HSL | hsl(222, 66%, 39%) |
| OKLCH | oklch(43.4% 0.154 263.4) |
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 #2149A4 | 8.22:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #2149A4 | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #2149A4 text on white | 8.22:1 | AAA | Lc 87.9 | Fine for body text |
| #2149A4 text on black | 2.55:1 | Fails | Lc -14.2 | 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
#A3C1FC
oklch(81% 0.09 263.6)
-
Step 400
400
#719EFA
oklch(70.7% 0.144 263.4)
-
Step 500
500
#4C82F7
oklch(63% 0.184 263.4)
-
Step 600
600
#3168E6
oklch(55.5% 0.2 263.5)
-
Step 700
700
#2456C8
oklch(49.1% 0.186 263.3)
-
Step 800
800 (this color)
#2149A4
oklch(43.4% 0.154 263.4)
-
Step 900
900
#1E3D80
oklch(37.7% 0.119 263.2)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#2149A4 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) | #0055A7 | 0.032 |
| Deuteranopia (no green cones) | #0049A2 | 0.018 |
| Tritanopia (no blue cones) | #005F6F | 0.119 |
| Achromatopsia (no color) | #4F4F4F | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2149A4
#2149A4
oklch(43.4% 0.154 263.4)
- #684B00
#684B00
oklch(43.3% 0.089 83)
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 #2149A4, closest first.
No curated palette has a color within ΔE 0.04 of #2149A4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.035
- Sapphire #2138AB ΔE 0.042
- Dusk Blue #26538D ΔE 0.050
- Blueberry #464196 ΔE 0.050
- Blue Blue #2242C7 ΔE 0.058
- Light Navy #155084 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.065
- Deep Sea Blue #015482 ΔE 0.069
Use #2149A4 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.