#154BB4
Closest named color: Blue Blue (#2242C7). oklch(44.8% 0.176 261.9), rgb(21, 75, 180).
Aa
White text reads best on this color (7.78:1).
About this color
#154BB4 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.176 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.036 away. White text reads best on it, at 7.78:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.69:1 |
| White text | 7.78:1 |
Values
| HEX | #154BB4 |
| RGB | rgb(21, 75, 180) |
| HSL | hsl(220, 79%, 39%) |
| OKLCH | oklch(44.8% 0.176 261.9) |
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 #154BB4 | 7.78:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #154BB4 | 2.69:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #154BB4 text on white | 7.78:1 | AAA | Lc 86.3 | Fine for body text |
| #154BB4 text on black | 2.69:1 | Fails | Lc -15.8 | 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
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4182FF
oklch(63.1% 0.198 261.8)
-
Step 600
600
#1965F6
oklch(55.7% 0.229 261.8)
-
Step 700
700
#0C52D6
oklch(49.1% 0.213 261.9)
-
Step 800
800 (this color)
#154BB4
oklch(44.8% 0.176 261.9)
-
Step 900
900
#143B89
oklch(37.7% 0.138 262.1)
-
Step 950
950
#0D2450
oklch(27.1% 0.086 261.8)
#154BB4 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) | #005AB8 | 0.038 |
| Deuteranopia (no green cones) | #004BB2 | 0.009 |
| Tritanopia (no blue cones) | #006678 | 0.135 |
| Achromatopsia (no color) | #525252 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #154BB4
#154BB4
oklch(44.8% 0.176 261.9)
- #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 #154BB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.036
- Sapphire #2138AB ΔE 0.046
- Cobalt #1E488F ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.062
- Blueberry #464196 ΔE 0.070
- Dusk Blue #26538D ΔE 0.070
- Blue With A Hint Of Purple #533CC6 ΔE 0.077
- Light Navy #155084 ΔE 0.081
Use #154BB4 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.