#174FBB
Closest named color: Blue Blue (#2242C7). oklch(46.3% 0.18 261.8), rgb(23, 79, 187).
Aa
White text reads best on this color (7.31:1).
About this color
#174FBB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.180 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.034 away. White text reads best on it, at 7.31:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #174FBB |
| RGB | rgb(23, 79, 187) |
| HSL | hsl(220, 78%, 41%) |
| OKLCH | oklch(46.3% 0.18 261.8) |
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 #174FBB | 7.31:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #174FBB | 2.87:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #174FBB text on white | 7.31:1 | AAA | Lc 84.7 | Fine for body text |
| #174FBB text on black | 2.87:1 | Fails | Lc -17.3 | 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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A2C1FA
oklch(80.9% 0.088 262.4)
-
Step 400
400
#6F9FF7
oklch(70.7% 0.14 261.7)
-
Step 500
500
#4A84F3
oklch(63.1% 0.177 261.9)
-
Step 600
600
#2D6AE2
oklch(55.5% 0.194 262)
-
Step 700
700 (this color)
#174FBB
oklch(46.3% 0.18 261.8)
-
Step 800
800
#1C499F
oklch(42.8% 0.149 261.7)
-
Step 900
900
#1C3E7E
oklch(37.7% 0.116 261.6)
-
Step 950
950
#11254A
oklch(27.1% 0.074 261.5)
#174FBB 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) | #005EBF | 0.038 |
| Deuteranopia (no green cones) | #004FB9 | 0.009 |
| Tritanopia (no blue cones) | #006A7D | 0.137 |
| Achromatopsia (no color) | #565656 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174FBB
#174FBB
oklch(46.3% 0.18 261.8)
- #735200
#735200
oklch(46.2% 0.095 81.6)
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 #174FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.034
- Sapphire #2138AB ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.061
- Cobalt #1E488F ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Dusk Blue #26538D ΔE 0.077
- Warm Blue #4B57DB ΔE 0.077
- Mid Blue #276AB3 ΔE 0.077
Use #174FBB 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.