#00449B
Closest named color: Cobalt (#1E488F). oklch(40.8% 0.154 258.5), rgb(0, 68, 155).
Aa
White text reads best on this color (9.12:1).
About this color
#00449B is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.154 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 9.12:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #00449B |
| RGB | rgb(0, 68, 155) |
| HSL | hsl(214, 100%, 30%) |
| OKLCH | oklch(40.8% 0.154 258.5) |
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 #00449B | 9.12:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #00449B | 2.30:1 | Fails | Lc 13.8 | Not readable |
| #00449B text on white | 9.12:1 | AAA | Lc 90.2 | Preferred for body text |
| #00449B text on black | 2.30:1 | Fails | Lc -12.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FB
oklch(80.8% 0.091 258.9)
-
Step 400
400
#66A1F9
oklch(70.7% 0.144 258.2)
-
Step 500
500
#3A86F6
oklch(63.1% 0.184 258.4)
-
Step 600
600
#116CE5
oklch(55.6% 0.2 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800 (this color)
#00449B
oklch(40.8% 0.154 258.5)
-
Step 900
900
#123F80
oklch(37.8% 0.12 258.4)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#00449B 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) | #004F9E | 0.030 |
| Deuteranopia (no green cones) | #004299 | 0.006 |
| Tritanopia (no blue cones) | #005A68 | 0.117 |
| Achromatopsia (no color) | #484848 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00449B
#00449B
oklch(40.8% 0.154 258.5)
- #624300
#624300
oklch(40.7% 0.085 78.8)
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 #00449B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Sapphire #2138AB ΔE 0.040
- Twilight Blue #0A437A ΔE 0.055
- Light Navy #155084 ΔE 0.056
- Dusk Blue #26538D ΔE 0.058
- Blueberry #464196 ΔE 0.065
- Deep Sea Blue #015482 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.073
Use #00449B 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.