#19478D
Closest named color: Cobalt (#1E488F). oklch(40.8% 0.127 259), rgb(25, 71, 141).
Aa
White text reads best on this color (9.02:1).
About this color
#19478D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.127 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.006 away. White text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #19478D |
| RGB | rgb(25, 71, 141) |
| HSL | hsl(216, 70%, 33%) |
| OKLCH | oklch(40.8% 0.127 259) |
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 #19478D | 9.02:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #19478D | 2.32:1 | Fails | Lc 13.7 | Not readable |
| #19478D text on white | 9.02:1 | AAA | Lc 90.3 | Preferred for body text |
| #19478D text on black | 2.32:1 | Fails | Lc -12.0 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F1
oklch(80.8% 0.074 259.3)
-
Step 400
400
#73A1EA
oklch(70.6% 0.119 259.3)
-
Step 500
500
#4D88E4
oklch(63.1% 0.152 259)
-
Step 600
600
#3070D1
oklch(55.6% 0.164 258.8)
-
Step 700
700
#235DB5
oklch(49.1% 0.152 258.9)
-
Step 800
800 (this color)
#19478D
oklch(40.8% 0.127 259)
-
Step 900
900
#1E4075
oklch(37.6% 0.099 259)
-
Step 950
950
#122645
oklch(27% 0.064 258.9)
#19478D 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) | #1E4E90 | 0.021 |
| Deuteranopia (no green cones) | #00448C | 0.017 |
| Tritanopia (no blue cones) | #005863 | 0.098 |
| Achromatopsia (no color) | #494949 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19478D
#19478D
oklch(40.8% 0.127 259)
- #624300
#624300
oklch(40.7% 0.085 78.8)
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 #19478D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.006
- Light Navy #155084 ΔE 0.032
- Twilight Blue #0A437A ΔE 0.035
- Dusk Blue #26538D ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.045
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.059
- Sapphire #2138AB ΔE 0.062
Use #19478D 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.