#2149A5
Closest named color: Cobalt (#1E488F). oklch(43.5% 0.156 263.5), rgb(33, 73, 165).
Aa
White text reads best on this color (8.19:1).
About this color
#2149A5 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.156 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #2149A5 |
| RGB | rgb(33, 73, 165) |
| HSL | hsl(222, 67%, 39%) |
| OKLCH | oklch(43.5% 0.156 263.5) |
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 #2149A5 | 8.19:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #2149A5 | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #2149A5 text on white | 8.19:1 | AAA | Lc 87.8 | Fine for body text |
| #2149A5 text on black | 2.56:1 | Fails | Lc -14.3 | 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
#A2C1FC
oklch(80.9% 0.091 263)
-
Step 400
400
#719EFB
oklch(70.8% 0.145 263.6)
-
Step 500
500
#4C82F8
oklch(63.1% 0.186 263.5)
-
Step 600
600
#3168E7
oklch(55.6% 0.202 263.5)
-
Step 700
700
#2455C9
oklch(49% 0.188 263.6)
-
Step 800
800 (this color)
#2149A5
oklch(43.5% 0.156 263.5)
-
Step 900
900
#1E3D81
oklch(37.8% 0.121 263.3)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#2149A5 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) | #0055A8 | 0.032 |
| Deuteranopia (no green cones) | #0049A3 | 0.018 |
| Tritanopia (no blue cones) | #00606F | 0.123 |
| Achromatopsia (no color) | #4F4F4F | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2149A5
#2149A5
oklch(43.5% 0.156 263.5)
- #684C00
#684C00
oklch(43.5% 0.089 84.2)
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 #2149A5, closest first.
No curated palette has a color within ΔE 0.04 of #2149A5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Sapphire #2138AB ΔE 0.042
- Blueberry #464196 ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
- Blue Blue #2242C7 ΔE 0.057
- Light Navy #155084 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.066
- Denim Blue #3B5B92 ΔE 0.070
Use #2149A5 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.