#1451AA
Closest named color: Cobalt (#1E488F). oklch(45.2% 0.155 258.9), rgb(20, 81, 170).
Aa
White text reads best on this color (7.53:1).
About this color
#1451AA is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.155 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.048 away. White text reads best on it, at 7.53:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #1451AA |
| RGB | rgb(20, 81, 170) |
| HSL | hsl(216, 79%, 37%) |
| OKLCH | oklch(45.2% 0.155 258.9) |
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 #1451AA | 7.53:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #1451AA | 2.78:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #1451AA text on white | 7.53:1 | AAA | Lc 85.6 | Fine for body text |
| #1451AA text on black | 2.78:1 | Fails | Lc -16.5 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400
#67A0FA
oklch(70.6% 0.146 259.2)
-
Step 500
500
#3B85F7
oklch(63% 0.186 259)
-
Step 600
600
#146CE6
oklch(55.7% 0.201 258.8)
-
Step 700
700
#0359C8
oklch(49.1% 0.187 258.9)
-
Step 800
800 (this color)
#1451AA
oklch(45.2% 0.155 258.9)
-
Step 900
900
#133F80
oklch(37.8% 0.12 258.7)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#1451AA 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) | #105BAD | 0.027 |
| Deuteranopia (no green cones) | #004EA8 | 0.013 |
| Tritanopia (no blue cones) | #006775 | 0.119 |
| Achromatopsia (no color) | #545454 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1451AA
#1451AA
oklch(45.2% 0.155 258.9)
- #724E00
#724E00
oklch(45.2% 0.094 78.1)
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 #1451AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Blue Blue #2242C7 ΔE 0.058
- Sapphire #2138AB ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.062
- Light Navy #155084 ΔE 0.062
- Blueberry #464196 ΔE 0.065
- Light Navy Blue #2E5A88 ΔE 0.068
Use #1451AA 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.