#134579
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.102 253), rgb(19, 69, 121).
Aa
White text reads best on this color (9.74:1).
About this color
#134579 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.102 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.009 away. White text reads best on it, at 9.74:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #134579 |
| RGB | rgb(19, 69, 121) |
| HSL | hsl(211, 73%, 27%) |
| OKLCH | oklch(38.7% 0.102 253) |
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 #134579 | 9.74:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #134579 | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #134579 text on white | 9.74:1 | AAA | Lc 92.2 | Preferred for body text |
| #134579 text on black | 2.15:1 | Fails | Lc -10.2 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF5
oklch(88.4% 0.042 253.8)
-
Step 300
300
#9EC4F2
oklch(80.9% 0.077 253.5)
-
Step 400
400
#66A4EB
oklch(70.7% 0.123 252.9)
-
Step 500
500
#388BE5
oklch(63.1% 0.157 253.2)
-
Step 600
600
#0173D3
oklch(55.6% 0.171 253)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900 (this color)
#134579
oklch(38.7% 0.102 253)
-
Step 950
950
#0C2745
oklch(27% 0.065 253.3)
#134579 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) | #2B497B | 0.026 |
| Deuteranopia (no green cones) | #194078 | 0.015 |
| Tritanopia (no blue cones) | #005159 | 0.075 |
| Achromatopsia (no color) | #444444 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #134579
#134579
oklch(38.7% 0.102 253)
- #5F3C00
#5F3C00
oklch(38.8% 0.083 72.6)
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 #134579, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.009
- Light Navy #155084 ΔE 0.036
- Cobalt #1E488F ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.045
- Marine Blue #01386A ΔE 0.048
- Dusk Blue #26538D ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.055
- Charcoal #264653 ΔE 0.067
Use #134579 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.