#344289
Closest named color: Cobalt (#1E488F). oklch(40.7% 0.119 271.8), rgb(52, 66, 137).
Aa
White text reads best on this color (9.18:1).
About this color
#344289 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.119 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.027 away. White text reads best on it, at 9.18:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #344289 |
| RGB | rgb(52, 66, 137) |
| HSL | hsl(230, 45%, 37%) |
| OKLCH | oklch(40.7% 0.119 271.8) |
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 #344289 | 9.18:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #344289 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #344289 text on white | 9.18:1 | AAA | Lc 90.9 | Preferred for body text |
| #344289 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B0BFEE
oklch(80.9% 0.069 271)
-
Step 400
400
#889CE6
oklch(70.7% 0.111 271.8)
-
Step 500
500
#6C82DF
oklch(63.2% 0.142 271.8)
-
Step 600
600
#5569CC
oklch(55.6% 0.154 271.9)
-
Step 700
700
#4557B1
oklch(49.1% 0.144 271.6)
-
Step 800
800 (this color)
#344289
oklch(40.7% 0.119 271.8)
-
Step 900
900
#313D72
oklch(37.8% 0.092 271.8)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#344289 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) | #1C4C8C | 0.033 |
| Deuteranopia (no green cones) | #084488 | 0.037 |
| Tritanopia (no blue cones) | #00525F | 0.102 |
| Achromatopsia (no color) | #484848 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #344289
#344289
oklch(40.7% 0.119 271.8)
- #5A4700
#5A4700
oklch(40.6% 0.083 91.2)
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 #344289, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.027
- Dark Slate Blue #483D8B ΔE 0.032
- Blueberry #464196 ΔE 0.034
- Twilight Blue #0A437A ΔE 0.047
- Light Navy #155084 ΔE 0.047
- Dusk Blue #26538D ΔE 0.047
- Twilight #4E518B ΔE 0.060
- Deep Sea Blue #015482 ΔE 0.061
Use #344289 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.