#01658E
Closest named color: Peacock Blue (#016795). oklch(47.9% 0.102 235.3), rgb(1, 101, 142).
Aa
White text reads best on this color (6.45:1).
About this color
#01658E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.102 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.012 away. White text reads best on it, at 6.45:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #01658E |
| RGB | rgb(1, 101, 142) |
| HSL | hsl(197, 99%, 28%) |
| OKLCH | oklch(47.9% 0.102 235.3) |
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 #01658E | 6.45:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #01658E | 3.25:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #01658E text on white | 6.45:1 | AA | Lc 81.5 | Fine for body text |
| #01658E text on black | 3.25:1 | AA large text | Lc -20.4 | 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
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DC
oklch(80.8% 0.049 235.8)
-
Step 400
400
#6FA9CB
oklch(70.8% 0.078 235.2)
-
Step 500
500
#4493BE
oklch(63.2% 0.101 235.3)
-
Step 600
600
#1C7CAA
oklch(55.5% 0.11 235.6)
-
Step 700
700 (this color)
#01658E
oklch(47.9% 0.102 235.3)
-
Step 800
800
#105576
oklch(42.6% 0.084 235.5)
-
Step 900
900
#17475F
oklch(37.7% 0.065 234.2)
-
Step 950
950
#102A38
oklch(27.2% 0.041 234.6)
#01658E 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) | #516590 | 0.060 |
| Deuteranopia (no green cones) | #3F598D | 0.049 |
| Tritanopia (no blue cones) | #007073 | 0.064 |
| Achromatopsia (no color) | #5E5E5E | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01658E
#01658E
oklch(47.9% 0.102 235.3)
- #884C1B
#884C1B
oklch(47.9% 0.102 55.7)
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 #01658E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.012
- Denim #3B638C ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.035
- Ocean Blue #03719C ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.044
- Sea Blue #047495 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.052
Use #01658E 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.