#174D6F
Closest named color: Deep Sea Blue (#015482). oklch(40.2% 0.08 240.9), rgb(23, 77, 111).
Aa
White text reads best on this color (9.02:1).
About this color
#174D6F is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.080 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.034 away. White text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #174D6F |
| RGB | rgb(23, 77, 111) |
| HSL | hsl(203, 66%, 26%) |
| OKLCH | oklch(40.2% 0.08 240.9) |
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 #174D6F | 9.02:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #174D6F | 2.32:1 | Fails | Lc 13.5 | Not readable |
| #174D6F text on white | 9.02:1 | AAA | Lc 90.4 | Preferred for body text |
| #174D6F text on black | 2.32:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A7C5DC
oklch(80.9% 0.046 241.2)
-
Step 400
400
#76A7CB
oklch(70.7% 0.074 241)
-
Step 500
500
#5091BE
oklch(63.2% 0.095 240.7)
-
Step 600
600
#317AAA
oklch(55.6% 0.104 241.1)
-
Step 700
700
#236792
oklch(49.2% 0.096 240.8)
-
Step 800
800 (this color)
#174D6F
oklch(40.2% 0.08 240.9)
-
Step 900
900
#20455F
oklch(37.6% 0.062 241.6)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#174D6F 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) | #3D4D71 | 0.040 |
| Deuteranopia (no green cones) | #31456E | 0.032 |
| Tritanopia (no blue cones) | #005559 | 0.053 |
| Achromatopsia (no color) | #494949 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174D6F
#174D6F
oklch(40.2% 0.08 240.9)
- #673D14
#673D14
oklch(40.3% 0.08 60.9)
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 #174D6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.034
- Light Navy #155084 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.036
- Twilight Blue #0A437A ΔE 0.041
- Charcoal #264653 ΔE 0.047
- Deep Teal #00555A ΔE 0.051
- Dusk Blue #26538D ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.059
Use #174D6F 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.