#174488
Closest named color: Cobalt (#1E488F). oklch(39.7% 0.124 258.9), rgb(23, 68, 136).
Aa
White text reads best on this color (9.46:1).
About this color
#174488 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.124 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.017 away. White text reads best on it, at 9.46:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #174488 |
| RGB | rgb(23, 68, 136) |
| HSL | hsl(216, 71%, 31%) |
| OKLCH | oklch(39.7% 0.124 258.9) |
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 #174488 | 9.46:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #174488 | 2.21:1 | Fails | Lc 12.5 | Not readable |
| #174488 text on white | 9.46:1 | AAA | Lc 91.4 | Preferred for body text |
| #174488 text on black | 2.21:1 | Fails | Lc -10.9 | Not readable |
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 900.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC2FD
oklch(80.8% 0.094 259)
-
Step 400
400
#65A0FC
oklch(70.6% 0.149 259)
-
Step 500
500
#3885FA
oklch(63.1% 0.191 258.9)
-
Step 600
600
#0E6BE9
oklch(55.6% 0.207 258.9)
-
Step 700
700
#0059C9
oklch(49.2% 0.189 258.8)
-
Step 800
800
#0649A4
oklch(42.8% 0.159 258.9)
-
Step 900
900 (this color)
#174488
oklch(39.7% 0.124 258.9)
-
Step 950
950
#0C254C
oklch(27% 0.079 259.2)
#174488 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) | #1C4B8B | 0.021 |
| Deuteranopia (no green cones) | #004187 | 0.016 |
| Tritanopia (no blue cones) | #00545F | 0.095 |
| Achromatopsia (no color) | #464646 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174488
#174488
oklch(39.7% 0.124 258.9)
- #5E4100
#5E4100
oklch(39.8% 0.082 79.9)
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 #174488, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.017
- Twilight Blue #0A437A ΔE 0.026
- Light Navy #155084 ΔE 0.037
- Dusk Blue #26538D ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Marine Blue #01386A ΔE 0.063
Use #174488 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.