#174988
Closest named color: Cobalt (#1E488F). oklch(40.9% 0.118 256.2), rgb(23, 73, 136).
Aa
White text reads best on this color (8.95:1).
About this color
#174988 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.118 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.014 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #174988 |
| RGB | rgb(23, 73, 136) |
| HSL | hsl(213, 71%, 31%) |
| OKLCH | oklch(40.9% 0.118 256.2) |
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 #174988 | 8.95:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #174988 | 2.34:1 | Fails | Lc 13.8 | Not readable |
| #174988 text on white | 8.95:1 | AAA | Lc 90.1 | Preferred for body text |
| #174988 text on black | 2.34:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A4C3ED
oklch(80.9% 0.069 256.1)
-
Step 400
400
#72A3E4
oklch(70.7% 0.109 255.8)
-
Step 500
500
#4C8ADD
oklch(63.1% 0.141 256.4)
-
Step 600
600
#2E72CA
oklch(55.5% 0.153 256.4)
-
Step 700
700
#205FAF
oklch(49% 0.142 256.4)
-
Step 800
800 (this color)
#174988
oklch(40.9% 0.118 256.2)
-
Step 900
900
#1D4271
oklch(37.8% 0.091 255.6)
-
Step 950
950
#122742
oklch(27.1% 0.057 255.5)
#174988 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) | #284F8A | 0.025 |
| Deuteranopia (no green cones) | #0E4587 | 0.014 |
| Tritanopia (no blue cones) | #005862 | 0.089 |
| Achromatopsia (no color) | #494949 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174988
#174988
oklch(40.9% 0.118 256.2)
- #644200
#644200
oklch(40.8% 0.086 75.8)
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 #174988, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.014
- Light Navy #155084 ΔE 0.023
- Twilight Blue #0A437A ΔE 0.030
- Dusk Blue #26538D ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.058
- Blueberry #464196 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
Use #174988 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.