#174F76
Closest named color: Deep Sea Blue (#015482). oklch(41.2% 0.087 243.7), rgb(23, 79, 118).
Aa
White text reads best on this color (8.69:1).
About this color
#174F76 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.087 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.022 away. White text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #174F76 |
| RGB | rgb(23, 79, 118) |
| HSL | hsl(205, 67%, 28%) |
| OKLCH | oklch(41.2% 0.087 243.7) |
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 #174F76 | 8.69:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #174F76 | 2.41:1 | Fails | Lc 14.5 | Not readable |
| #174F76 text on white | 8.69:1 | AAA | Lc 89.5 | Fine for body text |
| #174F76 text on black | 2.41:1 | Fails | Lc -12.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A5C5DF
oklch(80.9% 0.05 242.9)
-
Step 400
400
#74A7D0
oklch(70.8% 0.081 243.5)
-
Step 500
500
#4D90C3
oklch(63.1% 0.103 243.5)
-
Step 600
600
#2D79B0
oklch(55.5% 0.113 244)
-
Step 700
700
#1F6697
oklch(49.1% 0.104 243.6)
-
Step 800
800 (this color)
#174F76
oklch(41.2% 0.087 243.7)
-
Step 900
900
#1E4563
oklch(37.7% 0.068 244.3)
-
Step 950
950
#12293A
oklch(27.1% 0.043 242.6)
#174F76 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) | #3D5078 | 0.039 |
| Deuteranopia (no green cones) | #304775 | 0.030 |
| Tritanopia (no blue cones) | #00595D | 0.061 |
| Achromatopsia (no color) | #4B4B4B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174F76
#174F76
oklch(41.2% 0.087 243.7)
- #6B3F0C
#6B3F0C
oklch(41.2% 0.087 63.6)
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 #174F76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.022
- Light Navy #155084 ΔE 0.023
- Twilight Blue #0A437A ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.048
- Cobalt #1E488F ΔE 0.050
- YInMn Blue #415A77 ΔE 0.058
Use #174F76 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.