#1B497E
Closest named color: Light Navy (#155084). oklch(40.3% 0.102 254.2), rgb(27, 73, 126).
Aa
White text reads best on this color (9.12:1).
About this color
#1B497E is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.102 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.021 away. White text reads best on it, at 9.12:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #1B497E |
| RGB | rgb(27, 73, 126) |
| HSL | hsl(212, 65%, 30%) |
| OKLCH | oklch(40.3% 0.102 254.2) |
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 #1B497E | 9.12:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #1B497E | 2.30:1 | Fails | Lc 13.3 | Not readable |
| #1B497E text on white | 9.12:1 | AAA | Lc 90.7 | Preferred for body text |
| #1B497E text on black | 2.30:1 | Fails | Lc -11.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E7
oklch(80.9% 0.06 254.8)
-
Step 400
400
#77A4DB
oklch(70.8% 0.095 253.9)
-
Step 500
500
#528CD2
oklch(63.2% 0.123 254.2)
-
Step 600
600
#3574BF
oklch(55.5% 0.134 254.5)
-
Step 700
700
#2761A5
oklch(49% 0.125 254.5)
-
Step 800
800 (this color)
#1B497E
oklch(40.3% 0.102 254.2)
-
Step 900
900
#21436B
oklch(37.8% 0.08 253.9)
-
Step 950
950
#14273F
oklch(27% 0.052 255)
#1B497E 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) | #304D80 | 0.025 |
| Deuteranopia (no green cones) | #1F447D | 0.014 |
| Tritanopia (no blue cones) | #00565D | 0.079 |
| Achromatopsia (no color) | #484848 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B497E
#1B497E
oklch(40.3% 0.102 254.2)
- #634000
#634000
oklch(40.2% 0.085 74.1)
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 #1B497E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.021
- Twilight Blue #0A437A ΔE 0.023
- Cobalt #1E488F ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.032
- Dusk Blue #26538D ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.059
- Marine Blue #01386A ΔE 0.064
Use #1B497E 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.