#19739D
Closest named color: Ocean Blue (#03719C). oklch(52.6% 0.103 234.9), rgb(25, 115, 157).
Aa
White text reads best on this color (5.27:1).
About this color
#19739D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.103 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.010 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #19739D |
| RGB | rgb(25, 115, 157) |
| HSL | hsl(199, 73%, 36%) |
| OKLCH | oklch(52.6% 0.103 234.9) |
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 #19739D | 5.27:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #19739D | 3.98:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #19739D text on white | 5.27:1 | AA | Lc 75.8 | Fine for body text |
| #19739D text on black | 3.98:1 | AA large text | Lc -25.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A4C6DB
oklch(80.9% 0.047 235.3)
-
Step 400
400
#72A8C8
oklch(70.6% 0.074 235.3)
-
Step 500
500
#4992BA
oklch(63% 0.095 235)
-
Step 600
600 (this color)
#19739D
oklch(52.6% 0.103 234.9)
-
Step 700
700
#17688F
oklch(49% 0.096 235.5)
-
Step 800
800
#175574
oklch(42.6% 0.08 235.3)
-
Step 900
900
#1B475E
oklch(37.8% 0.062 234.6)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#19739D 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) | #5E729F | 0.062 |
| Deuteranopia (no green cones) | #4D669C | 0.052 |
| Tritanopia (no blue cones) | #007E81 | 0.064 |
| Achromatopsia (no color) | #6C6C6C | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19739D
#19739D
oklch(52.6% 0.103 234.9)
- #97592A
#97592A
oklch(52.6% 0.102 55.2)
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 #19739D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.010
- Sea Blue #047495 ΔE 0.016
- Muted Blue #3B719F ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.031
- Nice Blue #107AB0 ΔE 0.032
- Ocean #017B92 ΔE 0.034
- Dull Blue #49759C ΔE 0.037
- Peacock Blue #016795 ΔE 0.039
Use #19739D 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.