#1977AE
Closest named color: Nice Blue (#107AB0). oklch(54.5% 0.118 241.1), rgb(25, 119, 174).
Aa
White text reads best on this color (4.89:1).
About this color
#1977AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.118 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.008 away. White text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.29:1 |
| White text | 4.89:1 |
Values
| HEX | #1977AE |
| RGB | rgb(25, 119, 174) |
| HSL | hsl(202, 75%, 39%) |
| OKLCH | oklch(54.5% 0.118 241.1) |
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 #1977AE | 4.89:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #1977AE | 4.29:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #1977AE text on white | 4.89:1 | AA | Lc 73.5 | Content text, not long reading |
| #1977AE text on black | 4.29:1 | AA large text | Lc -28.2 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A3C6E0
oklch(81% 0.053 240.5)
-
Step 400
400
#6FA8D1
oklch(70.8% 0.085 240.8)
-
Step 500
500
#4491C5
oklch(63.1% 0.109 241.1)
-
Step 600
600 (this color)
#1977AE
oklch(54.5% 0.118 241.1)
-
Step 700
700
#0D6799
oklch(49.1% 0.11 241.1)
-
Step 800
800
#11547C
oklch(42.7% 0.091 241.2)
-
Step 900
900
#184664
oklch(37.8% 0.071 241.1)
-
Step 950
950
#10293A
oklch(27% 0.044 240.8)
#1977AE 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) | #5D78B0 | 0.058 |
| Deuteranopia (no green cones) | #496BAD | 0.045 |
| Tritanopia (no blue cones) | #00858B | 0.079 |
| Achromatopsia (no color) | #717171 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1977AE
#1977AE
oklch(54.5% 0.118 241.1)
- #A05D14
#A05D14
oklch(54.4% 0.118 61.2)
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 #1977AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.008
- Flat Blue #3C73A8 ΔE 0.023
- Muted Blue #3B719F ΔE 0.030
- Ocean Blue #03719C ΔE 0.033
- Windows Blue #3778BF ΔE 0.034
- Mid Blue #276AB3 ΔE 0.039
- French Blue #436BAD ΔE 0.041
- Sea Blue #047495 ΔE 0.041
Use #1977AE 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.