#174F6D
Closest named color: Deep Sea Blue (#015482). oklch(40.7% 0.076 236.7), rgb(23, 79, 109).
Aa
White text reads best on this color (8.83:1).
About this color
#174F6D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.076 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.83:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #174F6D |
| RGB | rgb(23, 79, 109) |
| HSL | hsl(201, 65%, 26%) |
| OKLCH | oklch(40.7% 0.076 236.7) |
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 #174F6D | 8.83:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #174F6D | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #174F6D text on white | 8.83:1 | AAA | Lc 89.9 | Fine for body text |
| #174F6D text on black | 2.37:1 | Fails | Lc -12.3 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A6C6DA
oklch(81% 0.045 235.5)
-
Step 400
400
#75A8C7
oklch(70.7% 0.071 235.8)
-
Step 500
500
#4F92B9
oklch(63.2% 0.09 236.1)
-
Step 600
600
#2F7BA5
oklch(55.5% 0.098 236.7)
-
Step 700
700
#21688E
oklch(49.2% 0.092 236.7)
-
Step 800
800 (this color)
#174F6D
oklch(40.7% 0.076 236.7)
-
Step 900
900
#1F465D
oklch(37.7% 0.059 237.1)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#174F6D 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) | #414F6E | 0.044 |
| Deuteranopia (no green cones) | #35476C | 0.035 |
| Tritanopia (no blue cones) | #005759 | 0.050 |
| Achromatopsia (no color) | #4A4A4A | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174F6D
#174F6D
oklch(40.7% 0.076 236.7)
- #683E1C
#683E1C
oklch(40.7% 0.076 57.3)
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 #174F6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.037
- Light Navy #155084 ΔE 0.039
- Deep Teal #00555A ΔE 0.044
- Charcoal #264653 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.049
- Petrol #005F6A ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #174F6D 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.