#174E6E
Closest named color: Deep Sea Blue (#015482). oklch(40.4% 0.078 238.9), rgb(23, 78, 110).
Aa
White text reads best on this color (8.93:1).
About this color
#174E6E is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.078 and its hue 239°. 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 8.93:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #174E6E |
| RGB | rgb(23, 78, 110) |
| HSL | hsl(202, 65%, 26%) |
| OKLCH | oklch(40.4% 0.078 238.9) |
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 #174E6E | 8.93:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #174E6E | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #174E6E text on white | 8.93:1 | AAA | Lc 90.2 | Preferred for body text |
| #174E6E text on black | 2.35:1 | Fails | Lc -12.1 | 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
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A7C5DB
oklch(80.8% 0.045 239.9)
-
Step 400
400
#76A7C9
oklch(70.6% 0.072 239.4)
-
Step 500
500
#5091BB
oklch(63.1% 0.092 238.9)
-
Step 600
600
#307BA8
oklch(55.7% 0.101 238.8)
-
Step 700
700
#226790
oklch(49.1% 0.094 239.3)
-
Step 800
800 (this color)
#174E6E
oklch(40.4% 0.078 238.9)
-
Step 900
900
#1F465E
oklch(37.7% 0.06 238.3)
-
Step 950
950
#132937
oklch(27% 0.038 238.3)
#174E6E 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) | #3F4E6F | 0.042 |
| Deuteranopia (no green cones) | #33466D | 0.033 |
| Tritanopia (no blue cones) | #005659 | 0.051 |
| Achromatopsia (no color) | #4A4A4A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174E6E
#174E6E
oklch(40.4% 0.078 238.9)
- #673D18
#673D18
oklch(40.3% 0.078 58.9)
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 #174E6E, 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
- Dark Grey Blue #29465B ΔE 0.036
- Light Navy #155084 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.045
- Charcoal #264653 ΔE 0.046
- Deep Teal #00555A ΔE 0.048
- Dusk Blue #26538D ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.056
Use #174E6E 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.