#18419F
Closest named color: Sapphire (#2138AB). oklch(41% 0.16 263.3), rgb(24, 65, 159).
Aa
White text reads best on this color (9.14:1).
About this color
#18419F is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.160 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.14:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.29:1 |
| White text | 9.14:1 |
Values
| HEX | #18419F |
| RGB | rgb(24, 65, 159) |
| HSL | hsl(222, 74%, 36%) |
| OKLCH | oklch(41% 0.16 263.3) |
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 #18419F | 9.14:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #18419F | 2.29:1 | Fails | Lc 13.5 | Not readable |
| #18419F text on white | 9.14:1 | AAA | Lc 90.4 | Preferred for body text |
| #18419F text on black | 2.29:1 | Fails | Lc -11.9 | 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
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A1C1FE
oklch(81% 0.094 263)
-
Step 400
400
#6F9EFD
oklch(70.8% 0.149 263.2)
-
Step 500
500
#4982FB
oklch(63.2% 0.19 263.1)
-
Step 600
600
#2D67EA
oklch(55.5% 0.208 263.2)
-
Step 700
700
#2155CC
oklch(49.2% 0.193 263.2)
-
Step 800
800 (this color)
#18419F
oklch(41% 0.16 263.3)
-
Step 900
900
#1C3C82
oklch(37.6% 0.124 263.2)
-
Step 950
950
#11244C
oklch(27% 0.078 263.1)
#18419F 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) | #004EA2 | 0.033 |
| Deuteranopia (no green cones) | #00429D | 0.012 |
| Tritanopia (no blue cones) | #005969 | 0.124 |
| Achromatopsia (no color) | #484848 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18419F
#18419F
oklch(41% 0.16 263.3)
- #604500
#604500
oklch(40.9% 0.084 83.1)
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 #18419F, closest first.
No curated palette has a color within ΔE 0.04 of #18419F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Cobalt #1E488F ΔE 0.034
- Blueberry #464196 ΔE 0.056
- Dusk Blue #26538D ΔE 0.063
- Twilight Blue #0A437A ΔE 0.064
- Light Navy #155084 ΔE 0.064
- Blue Blue #2242C7 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.066
Use #18419F 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.