#344C9B
Closest named color: Cobalt (#1E488F). oklch(44.2% 0.132 268), rgb(52, 76, 155).
Aa
White text reads best on this color (7.91:1).
About this color
#344C9B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.132 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #344C9B |
| RGB | rgb(52, 76, 155) |
| HSL | hsl(226, 50%, 41%) |
| OKLCH | oklch(44.2% 0.132 268) |
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 #344C9B | 7.91:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #344C9B | 2.65:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #344C9B text on white | 7.91:1 | AAA | Lc 87.2 | Fine for body text |
| #344C9B text on black | 2.65:1 | Fails | Lc -15.0 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F3
oklch(81% 0.076 267.3)
-
Step 400
400
#7F9DEE
oklch(70.7% 0.124 267.7)
-
Step 500
500
#6182E8
oklch(63.1% 0.158 268.2)
-
Step 600
600
#4969D6
oklch(55.6% 0.171 268.1)
-
Step 700
700
#3A57BA
oklch(49.1% 0.16 267.8)
-
Step 800
800 (this color)
#344C9B
oklch(44.2% 0.132 268)
-
Step 900
900
#2A3D78
oklch(37.7% 0.103 267.8)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#344C9B 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) | #20569E | 0.030 |
| Deuteranopia (no green cones) | #004D99 | 0.035 |
| Tritanopia (no blue cones) | #005E6C | 0.109 |
| Achromatopsia (no color) | #515151 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #344C9B
#344C9B
oklch(44.2% 0.132 268)
- #684F00
#684F00
oklch(44.2% 0.09 87.5)
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 #344C9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Dusk Blue #26538D ΔE 0.035
- Blueberry #464196 ΔE 0.035
- Twilight #4E518B ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.049
- Light Navy #155084 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.055
Use #344C9B 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.