#174357
Closest named color: Charcoal (#264653). oklch(36.2% 0.059 231.3), rgb(23, 67, 87).
Aa
White text reads best on this color (10.62:1).
About this color
#174357 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.059 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.020 away. White text reads best on it, at 10.62:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.97:1 |
| White text | 10.62:1 |
Values
| HEX | #174357 |
| RGB | rgb(23, 67, 87) |
| HSL | hsl(199, 58%, 22%) |
| OKLCH | oklch(36.2% 0.059 231.3) |
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 #174357 | 10.62:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #174357 | 1.97:1 | Fails | Lc 9.5 | Not readable |
| #174357 text on white | 10.62:1 | AAA | Lc 94.4 | Preferred for body text |
| #174357 text on black | 1.97:1 | Fails | Lc -8.2 | 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 900.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#72A9C5
oklch(70.7% 0.071 231.2)
-
Step 500
500
#4A93B6
oklch(63.1% 0.09 231.4)
-
Step 600
600
#277DA2
oklch(55.6% 0.098 231.1)
-
Step 700
700
#17698B
oklch(49% 0.091 231.5)
-
Step 800
800
#185671
oklch(42.8% 0.075 231.5)
-
Step 900
900 (this color)
#174357
oklch(36.2% 0.059 231.3)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#174357 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) | #394258 | 0.040 |
| Deuteranopia (no green cones) | #303C57 | 0.033 |
| Tritanopia (no blue cones) | #00484A | 0.035 |
| Achromatopsia (no color) | #3E3E3E | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174357
#174357
oklch(36.2% 0.059 231.3)
- #563420
#563420
oklch(36.2% 0.058 50.5)
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 #174357, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.020
- Dark Grey Blue #29465B ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.027
- Midnight Green #073B4C ΔE 0.034
- Dark Teal #014D4E ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.046
- Onyx #343A40 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.053
Use #174357 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.