#05419D
Closest named color: Sapphire (#2138AB). oklch(40.4% 0.16 260.2), rgb(5, 65, 157).
Aa
White text reads best on this color (9.33:1).
About this color
#05419D is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.160 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.033 away. White text reads best on it, at 9.33:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #05419D |
| RGB | rgb(5, 65, 157) |
| HSL | hsl(216, 94%, 32%) |
| OKLCH | oklch(40.4% 0.16 260.2) |
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 #05419D | 9.33:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #05419D | 2.24:1 | Fails | Lc 13.2 | Not readable |
| #05419D text on white | 9.33:1 | AAA | Lc 90.8 | Preferred for body text |
| #05419D text on black | 2.24:1 | Fails | Lc -11.6 | 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
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FE
oklch(81% 0.094 260.4)
-
Step 400
400
#689FFD
oklch(70.6% 0.15 260.5)
-
Step 500
500
#3D84FB
oklch(63.1% 0.192 260.1)
-
Step 600
600
#196AEA
oklch(55.7% 0.208 260.1)
-
Step 700
700
#0A57CC
oklch(49.1% 0.194 260.2)
-
Step 800
800 (this color)
#05419D
oklch(40.4% 0.16 260.2)
-
Step 900
900
#143E82
oklch(37.8% 0.124 259.8)
-
Step 950
950
#0D254C
oklch(27% 0.078 259.7)
#05419D 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) | #004DA0 | 0.032 |
| Deuteranopia (no green cones) | #00409B | 0.005 |
| Tritanopia (no blue cones) | #005968 | 0.123 |
| Achromatopsia (no color) | #474747 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05419D
#05419D
oklch(40.4% 0.16 260.2)
- #604300
#604300
oklch(40.5% 0.084 80.6)
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 #05419D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.033
- Cobalt #1E488F ΔE 0.035
- Twilight Blue #0A437A ΔE 0.059
- Light Navy #155084 ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Blueberry #464196 ΔE 0.065
- Blue Blue #2242C7 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.073
Use #05419D 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.