#0548AA
Closest named color: Sapphire (#2138AB). oklch(43% 0.169 259.8), rgb(5, 72, 170).
Aa
White text reads best on this color (8.35:1).
About this color
#0548AA is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.169 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.037 away. White text reads best on it, at 8.35:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #0548AA |
| RGB | rgb(5, 72, 170) |
| HSL | hsl(216, 94%, 34%) |
| OKLCH | oklch(43% 0.169 259.8) |
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 #0548AA | 8.35:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #0548AA | 2.51:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #0548AA text on white | 8.35:1 | AAA | Lc 88.0 | Fine for body text |
| #0548AA text on black | 2.51:1 | Fails | Lc -14.2 | 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 800.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0968F0
oklch(55.5% 0.219 259.9)
-
Step 700
700
#0056CE
oklch(49% 0.199 259.9)
-
Step 800
800 (this color)
#0548AA
oklch(43% 0.169 259.8)
-
Step 900
900
#0F3D86
oklch(37.7% 0.132 259.8)
-
Step 950
950
#0B244E
oklch(26.9% 0.084 260.2)
#0548AA 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) | #0055AD | 0.034 |
| Deuteranopia (no green cones) | #0047A8 | 0.005 |
| Tritanopia (no blue cones) | #006172 | 0.127 |
| Achromatopsia (no color) | #4E4E4E | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0548AA
#0548AA
oklch(43% 0.169 259.8)
- #694900
#694900
oklch(43% 0.089 79.8)
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 #0548AA, closest first.
No curated palette has a color within ΔE 0.04 of #0548AA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.037
- Cobalt #1E488F ΔE 0.045
- Blue Blue #2242C7 ΔE 0.050
- Dusk Blue #26538D ΔE 0.063
- Blueberry #464196 ΔE 0.067
- Light Navy #155084 ΔE 0.069
- Majorelle Blue #3F37C9 ΔE 0.074
- Deep Sea Blue #015482 ΔE 0.077
Use #0548AA 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.