#174EA6
Closest named color: Cobalt (#1E488F). oklch(44.3% 0.153 259.9), rgb(23, 78, 166).
Aa
White text reads best on this color (7.84:1).
About this color
#174EA6 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.153 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.039 away. White text reads best on it, at 7.84:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.67:1 |
| White text | 7.84:1 |
Values
| HEX | #174EA6 |
| RGB | rgb(23, 78, 166) |
| HSL | hsl(217, 76%, 37%) |
| OKLCH | oklch(44.3% 0.153 259.9) |
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 #174EA6 | 7.84:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #174EA6 | 2.67:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #174EA6 text on white | 7.84:1 | AAA | Lc 86.7 | Fine for body text |
| #174EA6 text on black | 2.67:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFB
oklch(88.4% 0.051 260.4)
-
Step 300
300
#9FC2FB
oklch(80.9% 0.09 260)
-
Step 400
400
#6AA0F9
oklch(70.7% 0.143 259.9)
-
Step 500
500
#4085F6
oklch(63.1% 0.183 259.8)
-
Step 600
600
#1E6BE5
oklch(55.6% 0.2 259.9)
-
Step 700
700
#1059C7
oklch(49.2% 0.185 259.7)
-
Step 800
800 (this color)
#174EA6
oklch(44.3% 0.153 259.9)
-
Step 900
900
#163E80
oklch(37.7% 0.12 260)
-
Step 950
950
#0E254B
oklch(27% 0.076 259.9)
#174EA6 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) | #0B58A9 | 0.026 |
| Deuteranopia (no green cones) | #004CA4 | 0.012 |
| Tritanopia (no blue cones) | #006472 | 0.118 |
| Achromatopsia (no color) | #525252 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174EA6
#174EA6
oklch(44.3% 0.153 259.9)
- #6E4C00
#6E4C00
oklch(44.2% 0.092 79.1)
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 #174EA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.039
- Dusk Blue #26538D ΔE 0.046
- Sapphire #2138AB ΔE 0.053
- Light Navy #155084 ΔE 0.057
- Blueberry #464196 ΔE 0.059
- Blue Blue #2242C7 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.064
- Deep Sea Blue #015482 ΔE 0.065
Use #174EA6 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.