#174BB3
Closest named color: Blue Blue (#2242C7). oklch(44.8% 0.174 262.1), rgb(23, 75, 179).
Aa
White text reads best on this color (7.79:1).
About this color
#174BB3 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.174 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.037 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #174BB3 |
| RGB | rgb(23, 75, 179) |
| HSL | hsl(220, 77%, 40%) |
| OKLCH | oklch(44.8% 0.174 262.1) |
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 #174BB3 | 7.79:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #174BB3 | 2.69:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #174BB3 text on white | 7.79:1 | AAA | Lc 86.4 | Fine for body text |
| #174BB3 text on black | 2.69:1 | Fails | Lc -15.7 | Dividers and decoration only |
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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFE
oklch(93.5% 0.03 262.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4282FF
oklch(63.2% 0.198 262)
-
Step 600
600
#1D65F5
oklch(55.7% 0.227 262.1)
-
Step 700
700
#1052D5
oklch(49% 0.211 262.2)
-
Step 800
800 (this color)
#174BB3
oklch(44.8% 0.174 262.1)
-
Step 900
900
#153B88
oklch(37.6% 0.136 262.3)
-
Step 950
950
#0D2450
oklch(27.1% 0.086 261.8)
#174BB3 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) | #0059B7 | 0.035 |
| Deuteranopia (no green cones) | #004BB1 | 0.010 |
| Tritanopia (no blue cones) | #006577 | 0.133 |
| Achromatopsia (no color) | #525252 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174BB3
#174BB3
oklch(44.8% 0.174 262.1)
- #6E4F00
#6E4F00
oklch(44.9% 0.092 82.4)
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 #174BB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.037
- Sapphire #2138AB ΔE 0.045
- Cobalt #1E488F ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.062
- Blueberry #464196 ΔE 0.068
- Dusk Blue #26538D ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.077
- Light Navy #155084 ΔE 0.080
Use #174BB3 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.