#174258
Closest named color: Charcoal (#264653). oklch(36% 0.06 234.4), rgb(23, 66, 88).
Aa
White text reads best on this color (10.73:1).
About this color
#174258 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.060 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.024 away. White text reads best on it, at 10.73:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.95:1 |
| White text | 10.73:1 |
Values
| HEX | #174258 |
| RGB | rgb(23, 66, 88) |
| HSL | hsl(200, 59%, 22%) |
| OKLCH | oklch(36% 0.06 234.4) |
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 #174258 | 10.73:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #174258 | 1.95:1 | Fails | Lc 9.3 | Not readable |
| #174258 text on white | 10.73:1 | AAA | Lc 94.7 | Preferred for body text |
| #174258 text on black | 1.95:1 | Fails | Lc -7.9 | 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 900.
-
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
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#73A8C7
oklch(70.6% 0.072 234.9)
-
Step 500
500
#4B92B9
oklch(63% 0.092 234.9)
-
Step 600
600
#287CA5
oklch(55.5% 0.101 234.3)
-
Step 700
700
#19698E
oklch(49.2% 0.094 234.1)
-
Step 800
800
#195573
oklch(42.6% 0.078 234.9)
-
Step 900
900 (this color)
#174258
oklch(36% 0.06 234.4)
-
Step 950
950
#122936
oklch(26.9% 0.038 235.3)
#174258 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) | #374159 | 0.037 |
| Deuteranopia (no green cones) | #2E3B58 | 0.032 |
| Tritanopia (no blue cones) | #004849 | 0.040 |
| Achromatopsia (no color) | #3E3E3E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174258
#174258
oklch(36% 0.06 234.4)
- #55341D
#55341D
oklch(36% 0.059 54.5)
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 #174258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.024
- Dark Grey Blue #29465B ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.026
- Midnight Green #073B4C ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.042
- Dark Teal #014D4E ΔE 0.046
- Onyx #343A40 ΔE 0.050
- Marine Blue #01386A ΔE 0.052
Use #174258 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.