#01759F
Closest named color: Ocean Blue (#03719C). oklch(52.9% 0.108 232.4), rgb(1, 117, 159).
Aa
White text reads best on this color (5.18:1).
About this color
#01759F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.108 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.012 away. White text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #01759F |
| RGB | rgb(1, 117, 159) |
| HSL | hsl(196, 99%, 31%) |
| OKLCH | oklch(52.9% 0.108 232.4) |
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 #01759F | 5.18:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #01759F | 4.04:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #01759F text on white | 5.18:1 | AA | Lc 75.1 | Fine for body text |
| #01759F text on black | 4.04:1 | AA large text | Lc -26.6 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A2C7DB
oklch(80.9% 0.049 231.7)
-
Step 400
400
#6DA9C9
oklch(70.6% 0.078 232.7)
-
Step 500
500
#4194BB
oklch(63.2% 0.099 231.7)
-
Step 600
600 (this color)
#01759F
oklch(52.9% 0.108 232.4)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#0B5675
oklch(42.7% 0.084 232.8)
-
Step 900
900
#16475E
oklch(37.7% 0.065 232.7)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#01759F 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) | #6074A1 | 0.070 |
| Deuteranopia (no green cones) | #4D679E | 0.058 |
| Tritanopia (no blue cones) | #008083 | 0.064 |
| Achromatopsia (no color) | #6D6D6D | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01759F
#01759F
oklch(52.9% 0.108 232.4)
- #9B5729
#9B5729
oklch(52.8% 0.108 52.1)
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 #01759F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.012
- Sea Blue #047495 ΔE 0.016
- Muted Blue #3B719F ΔE 0.029
- Nice Blue #107AB0 ΔE 0.029
- Ocean #017B92 ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.035
- Dull Blue #49759C ΔE 0.042
- Peacock Blue #016795 ΔE 0.042
Use #01759F 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.