#17658F
Closest named color: Peacock Blue (#016795). oklch(48.2% 0.098 238.3), rgb(23, 101, 143).
Aa
White text reads best on this color (6.37:1).
About this color
#17658F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.098 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.011 away. White text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #17658F |
| RGB | rgb(23, 101, 143) |
| HSL | hsl(201, 72%, 33%) |
| OKLCH | oklch(48.2% 0.098 238.3) |
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 #17658F | 6.37:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #17658F | 3.29:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #17658F text on white | 6.37:1 | AA | Lc 81.3 | Fine for body text |
| #17658F text on black | 3.29:1 | AA large text | Lc -20.6 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C6DC
oklch(81% 0.047 237.4)
-
Step 400
400
#73A8CB
oklch(70.8% 0.076 238.2)
-
Step 500
500
#4B92BD
oklch(63.2% 0.096 237.6)
-
Step 600
600
#297BAA
oklch(55.6% 0.106 238.5)
-
Step 700
700 (this color)
#17658F
oklch(48.2% 0.098 238.3)
-
Step 800
800
#1A5576
oklch(42.8% 0.081 237.8)
-
Step 900
900
#1C465F
oklch(37.7% 0.063 237.9)
-
Step 950
950
#122938
oklch(27% 0.04 239.2)
#17658F 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) | #516591 | 0.054 |
| Deuteranopia (no green cones) | #415A8E | 0.043 |
| Tritanopia (no blue cones) | #007074 | 0.064 |
| Achromatopsia (no color) | #5F5F5F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17658F
#17658F
oklch(48.2% 0.098 238.3)
- #874F1D
#874F1D
oklch(48.4% 0.098 58.5)
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 #17658F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.011
- Denim #3B638C ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.033
- Ocean Blue #03719C ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.039
- Sea Blue #047495 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.051
Use #17658F 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.