#18719A
Closest named color: Ocean Blue (#03719C). oklch(51.9% 0.101 234.6), rgb(24, 113, 154).
Aa
White text reads best on this color (5.42:1).
About this color
#18719A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.101 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.006 away. White text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.86:1 |
| White text | 5.42:1 |
Values
| HEX | #18719A |
| RGB | rgb(24, 113, 154) |
| HSL | hsl(199, 73%, 35%) |
| OKLCH | oklch(51.9% 0.101 234.6) |
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 #18719A | 5.42:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #18719A | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #18719A text on white | 5.42:1 | AA | Lc 76.7 | Fine for body text |
| #18719A text on black | 3.86:1 | AA large text | Lc -25.1 | 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 700.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE9
oklch(88.6% 0.027 234)
-
Step 300
300
#A3C6DC
oklch(80.8% 0.049 235.8)
-
Step 400
400
#6EA9CB
oklch(70.7% 0.079 234.8)
-
Step 500
500
#4393BD
oklch(63.1% 0.1 234.4)
-
Step 600
600
#1B7DA9
oklch(55.7% 0.108 234)
-
Step 700
700 (this color)
#18719A
oklch(51.9% 0.101 234.6)
-
Step 800
800
#0F5676
oklch(42.8% 0.084 234.2)
-
Step 900
900
#17475F
oklch(37.7% 0.065 234.2)
-
Step 950
950
#0F2A38
oklch(27.1% 0.042 233.9)
#18719A 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) | #5D709C | 0.062 |
| Deuteranopia (no green cones) | #4C6599 | 0.050 |
| Tritanopia (no blue cones) | #007C7F | 0.063 |
| Achromatopsia (no color) | #6A6A6A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18719A
#18719A
oklch(51.9% 0.101 234.6)
- #955729
#955729
oklch(51.9% 0.102 54.6)
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 #18719A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.006
- Sea Blue #047495 ΔE 0.015
- Muted Blue #3B719F ΔE 0.026
- Peacock Blue #016795 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.035
- Ocean #017B92 ΔE 0.036
- Nice Blue #107AB0 ΔE 0.039
- Dull Blue #49759C ΔE 0.041
Use #18719A 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.