#174BAA
Closest named color: Cobalt (#1E488F). oklch(44% 0.162 261.3), rgb(23, 75, 170).
Aa
White text reads best on this color (8.00:1).
About this color
#174BAA is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.162 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.044 away. White text reads best on it, at 8.00:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #174BAA |
| RGB | rgb(23, 75, 170) |
| HSL | hsl(219, 76%, 38%) |
| OKLCH | oklch(44% 0.162 261.3) |
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 #174BAA | 8.00:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #174BAA | 2.62:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #174BAA text on white | 8.00:1 | AAA | Lc 87.1 | Fine for body text |
| #174BAA text on black | 2.62:1 | Fails | Lc -15.0 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC1FE
oklch(80.8% 0.095 261.3)
-
Step 400
400
#699FFE
oklch(70.7% 0.151 261)
-
Step 500
500
#4183FC
oklch(63.1% 0.193 261.3)
-
Step 600
600
#2068EC
oklch(55.6% 0.212 261.4)
-
Step 700
700
#1356CD
oklch(49.1% 0.196 261.2)
-
Step 800
800 (this color)
#174BAA
oklch(44% 0.162 261.3)
-
Step 900
900
#173D83
oklch(37.7% 0.126 261.3)
-
Step 950
950
#0E244D
oklch(26.9% 0.081 261.5)
#174BAA 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) | #0057AD | 0.031 |
| Deuteranopia (no green cones) | #004AA8 | 0.011 |
| Tritanopia (no blue cones) | #006373 | 0.125 |
| Achromatopsia (no color) | #505050 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174BAA
#174BAA
oklch(44% 0.162 261.3)
- #6C4C00
#6C4C00
oklch(44% 0.091 80.8)
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 #174BAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.044
- Sapphire #2138AB ΔE 0.044
- Blue Blue #2242C7 ΔE 0.051
- Dusk Blue #26538D ΔE 0.056
- Blueberry #464196 ΔE 0.060
- Light Navy #155084 ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.073
Use #174BAA 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.